net/tcptestsuite: Update to 20220401

PR: 262769 Approved by: maintainer-timeout Sponsored by: Netflix
author: Olivier Cochard <olivier@FreeBSD.org> 2022-04-20 16:11:05 +0000
committer: Olivier Cochard <olivier@FreeBSD.org> 2022-04-20 16:16:07 +0000
commit: db0468e5782643e9c43805c4a84daf9d54fd3f61 (patch)
tree: 79640364687bbca428f7ef8ba2e82a67c2c5257b
parent: 4e6dd2796563b6032e36604a77a12d71cd6935ae (diff)
download: ports-db0468e5782643e9c43805c4a84daf9d54fd3f61.tar.gz
ports-db0468e5782643e9c43805c4a84daf9d54fd3f61.zip
4 files changed, 3553 insertions, 828 deletions
diff --git a/net/tcptestsuite/Makefile b/net/tcptestsuite/Makefile
index e8369205d96f..493644a8b1ae 100644
--- a/net/tcptestsuite/Makefile
+++ b/net/tcptestsuite/Makefile
@@ -1,5 +1,5 @@
 PORTNAME=	tcptestsuite
-DISTVERSION=	g20210322
+DISTVERSION=	g20220401
 PORTEPOCH=	1
 CATEGORIES=	net
 
@@ -13,7 +13,7 @@ RUN_DEPENDS=	packetdrill:net/packetdrill
 USE_GITHUB=	yes
 GH_ACCOUNT=	freebsd-net
 GH_PROJECT=	tcp-testsuite
-GH_TAGNAME=	30b7eb8
+GH_TAGNAME=	4b0d4c2
 
 NO_ARCH=	yes
 NO_BUILD=	yes
@@ -23,9 +23,11 @@ _TEST_DIR=	${STAGEDIR}${PREFIX}/tests/${PORTNAME}
 do-install:
 	${INSTALL_SCRIPT} ${WRKSRC}/run-all-tests ${STAGEDIR}${PREFIX}/bin
 	(cd ${WRKSRC} && \
-		${COPYTREE_SHARE} "fast-open snd-syn socket-api rcv-data-segments rcv-icmp snippets state-event-engine" ${STAGEDIR}${DATADIR})
+		${COPYTREE_SHARE} "fast-open snd-syn socket-api rcv-data-segments rcv-icmp snippets state-event-engine tcp-over-udp" ${STAGEDIR}${DATADIR})
 	${MKDIR} ${_TEST_DIR}
+	${INSTALL_SCRIPT} ${WRKSRC}/double-check.sh ${STAGEDIR}${DATADIR}
 	${INSTALL_SCRIPT} ${FILESDIR}/tcptestsuite_atf_test ${_TEST_DIR}
+	@${REINPLACE_CMD} -e 's|/usr/local|${PREFIX}|g' ${_TEST_DIR}/tcptestsuite_atf_test
 	${INSTALL_DATA} ${FILESDIR}/Kyuafile ${_TEST_DIR}
 
 .include <bsd.port.mk>
diff --git a/net/tcptestsuite/distinfo b/net/tcptestsuite/distinfo
index 7d0a655d7945..d938487e1878 100644
--- a/net/tcptestsuite/distinfo
+++ b/net/tcptestsuite/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1616444719
-SHA256 (freebsd-net-tcp-testsuite-g20210322-30b7eb8_GH0.tar.gz) = 449557751a637f2ffc9805e0f1d78834943b7efecd170883b4ef6a19d70f740e
-SIZE (freebsd-net-tcp-testsuite-g20210322-30b7eb8_GH0.tar.gz) = 100844
+TIMESTAMP = 1648846948
+SHA256 (freebsd-net-tcp-testsuite-g20220401-4b0d4c2_GH0.tar.gz) = 8938d4a90348f53e393b9dca3513a6c463125859ccd700b95075c1f62bc6ba7d
+SIZE (freebsd-net-tcp-testsuite-g20220401-4b0d4c2_GH0.tar.gz) = 110299
diff --git a/net/tcptestsuite/files/tcptestsuite_atf_test b/net/tcptestsuite/files/tcptestsuite_atf_test
index c072b09676fa..63091ac6129b 100644
--- a/net/tcptestsuite/files/tcptestsuite_atf_test
+++ b/net/tcptestsuite/files/tcptestsuite_atf_test
@@ -1,6 +1,7 @@
 #! /usr/libexec/atf-sh
 # This file is @generated by make_atf.sh
 # in the tcptestsuite distribution.
+
 save_sysctls() {
     sed -n 's/.*sysctl -w \([^=]*\)=.*/\1/p' < $1 \
     | sort -u \
@@ -12,6 +13,7 @@ restore_sysctls() {
     atf_check test $? -eq 0
     rm saved_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_01 cleanup
 client_handle_cookie_reject_of_length_01_head() {
     atf_set timeout 10
@@ -19,12 +21,14 @@ client_handle_cookie_reject_of_length_01_head() {
 }
 client_handle_cookie_reject_of_length_01_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-01.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-01.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-01.pkt
 }
 client_handle_cookie_reject_of_length_01_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_02 cleanup
 client_handle_cookie_reject_of_length_02_head() {
     atf_set timeout 10
@@ -32,12 +36,14 @@ client_handle_cookie_reject_of_length_02_head() {
 }
 client_handle_cookie_reject_of_length_02_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-02.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-02.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-02.pkt
 }
 client_handle_cookie_reject_of_length_02_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_03 cleanup
 client_handle_cookie_reject_of_length_03_head() {
     atf_set timeout 10
@@ -45,12 +51,14 @@ client_handle_cookie_reject_of_length_03_head() {
 }
 client_handle_cookie_reject_of_length_03_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-03.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-03.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-03.pkt
 }
 client_handle_cookie_reject_of_length_03_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_04 cleanup
 client_handle_cookie_reject_of_length_04_head() {
     atf_set timeout 10
@@ -58,12 +66,14 @@ client_handle_cookie_reject_of_length_04_head() {
 }
 client_handle_cookie_reject_of_length_04_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-04.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-04.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-04.pkt
 }
 client_handle_cookie_reject_of_length_04_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_05 cleanup
 client_handle_cookie_reject_of_length_05_head() {
     atf_set timeout 10
@@ -71,12 +81,14 @@ client_handle_cookie_reject_of_length_05_head() {
 }
 client_handle_cookie_reject_of_length_05_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-05.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-05.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-05.pkt
 }
 client_handle_cookie_reject_of_length_05_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_06 cleanup
 client_handle_cookie_reject_of_length_06_head() {
     atf_set timeout 10
@@ -84,12 +96,14 @@ client_handle_cookie_reject_of_length_06_head() {
 }
 client_handle_cookie_reject_of_length_06_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-06.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-06.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-06.pkt
 }
 client_handle_cookie_reject_of_length_06_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_07 cleanup
 client_handle_cookie_reject_of_length_07_head() {
     atf_set timeout 10
@@ -97,12 +111,14 @@ client_handle_cookie_reject_of_length_07_head() {
 }
 client_handle_cookie_reject_of_length_07_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-07.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-07.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-07.pkt
 }
 client_handle_cookie_reject_of_length_07_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_08 cleanup
 client_handle_cookie_reject_of_length_08_head() {
     atf_set timeout 10
@@ -110,12 +126,14 @@ client_handle_cookie_reject_of_length_08_head() {
 }
 client_handle_cookie_reject_of_length_08_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-08.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-08.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-08.pkt
 }
 client_handle_cookie_reject_of_length_08_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_09 cleanup
 client_handle_cookie_reject_of_length_09_head() {
     atf_set timeout 10
@@ -123,12 +141,14 @@ client_handle_cookie_reject_of_length_09_head() {
 }
 client_handle_cookie_reject_of_length_09_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-09.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-09.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-09.pkt
 }
 client_handle_cookie_reject_of_length_09_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_10 cleanup
 client_handle_cookie_reject_of_length_10_head() {
     atf_set timeout 10
@@ -136,12 +156,14 @@ client_handle_cookie_reject_of_length_10_head() {
 }
 client_handle_cookie_reject_of_length_10_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-10.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-10.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-10.pkt
 }
 client_handle_cookie_reject_of_length_10_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_11 cleanup
 client_handle_cookie_reject_of_length_11_head() {
     atf_set timeout 10
@@ -149,12 +171,14 @@ client_handle_cookie_reject_of_length_11_head() {
 }
 client_handle_cookie_reject_of_length_11_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-11.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-11.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-11.pkt
 }
 client_handle_cookie_reject_of_length_11_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_12 cleanup
 client_handle_cookie_reject_of_length_12_head() {
     atf_set timeout 10
@@ -162,12 +186,14 @@ client_handle_cookie_reject_of_length_12_head() {
 }
 client_handle_cookie_reject_of_length_12_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-12.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-12.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-12.pkt
 }
 client_handle_cookie_reject_of_length_12_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_13 cleanup
 client_handle_cookie_reject_of_length_13_head() {
     atf_set timeout 10
@@ -175,12 +201,14 @@ client_handle_cookie_reject_of_length_13_head() {
 }
 client_handle_cookie_reject_of_length_13_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-13.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-13.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-13.pkt
 }
 client_handle_cookie_reject_of_length_13_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_14 cleanup
 client_handle_cookie_reject_of_length_14_head() {
     atf_set timeout 10
@@ -188,12 +216,14 @@ client_handle_cookie_reject_of_length_14_head() {
 }
 client_handle_cookie_reject_of_length_14_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-14.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-14.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-14.pkt
 }
 client_handle_cookie_reject_of_length_14_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_15 cleanup
 client_handle_cookie_reject_of_length_15_head() {
     atf_set timeout 10
@@ -201,12 +231,14 @@ client_handle_cookie_reject_of_length_15_head() {
 }
 client_handle_cookie_reject_of_length_15_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-15.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-15.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-15.pkt
 }
 client_handle_cookie_reject_of_length_15_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_16 cleanup
 client_handle_cookie_reject_of_length_16_head() {
     atf_set timeout 10
@@ -214,12 +246,14 @@ client_handle_cookie_reject_of_length_16_head() {
 }
 client_handle_cookie_reject_of_length_16_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-16.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-16.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-16.pkt
 }
 client_handle_cookie_reject_of_length_16_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_17 cleanup
 client_handle_cookie_reject_of_length_17_head() {
     atf_set timeout 10
@@ -227,12 +261,14 @@ client_handle_cookie_reject_of_length_17_head() {
 }
 client_handle_cookie_reject_of_length_17_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-17.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-17.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-17.pkt
 }
 client_handle_cookie_reject_of_length_17_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_18 cleanup
 client_handle_cookie_reject_of_length_18_head() {
     atf_set timeout 10
@@ -240,12 +276,14 @@ client_handle_cookie_reject_of_length_18_head() {
 }
 client_handle_cookie_reject_of_length_18_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-18.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-18.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-18.pkt
 }
 client_handle_cookie_reject_of_length_18_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_19 cleanup
 client_handle_cookie_reject_of_length_19_head() {
     atf_set timeout 10
@@ -253,12 +291,14 @@ client_handle_cookie_reject_of_length_19_head() {
 }
 client_handle_cookie_reject_of_length_19_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-19.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-19.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-19.pkt
 }
 client_handle_cookie_reject_of_length_19_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_20 cleanup
 client_handle_cookie_reject_of_length_20_head() {
     atf_set timeout 10
@@ -266,12 +306,14 @@ client_handle_cookie_reject_of_length_20_head() {
 }
 client_handle_cookie_reject_of_length_20_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-20.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-20.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-20.pkt
 }
 client_handle_cookie_reject_of_length_20_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_21 cleanup
 client_handle_cookie_reject_of_length_21_head() {
     atf_set timeout 10
@@ -279,12 +321,14 @@ client_handle_cookie_reject_of_length_21_head() {
 }
 client_handle_cookie_reject_of_length_21_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-21.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-21.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-21.pkt
 }
 client_handle_cookie_reject_of_length_21_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_22 cleanup
 client_handle_cookie_reject_of_length_22_head() {
     atf_set timeout 10
@@ -292,12 +336,14 @@ client_handle_cookie_reject_of_length_22_head() {
 }
 client_handle_cookie_reject_of_length_22_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-22.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-22.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-22.pkt
 }
 client_handle_cookie_reject_of_length_22_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_23 cleanup
 client_handle_cookie_reject_of_length_23_head() {
     atf_set timeout 10
@@ -305,12 +351,14 @@ client_handle_cookie_reject_of_length_23_head() {
 }
 client_handle_cookie_reject_of_length_23_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-23.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-23.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-23.pkt
 }
 client_handle_cookie_reject_of_length_23_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_24 cleanup
 client_handle_cookie_reject_of_length_24_head() {
     atf_set timeout 10
@@ -318,12 +366,14 @@ client_handle_cookie_reject_of_length_24_head() {
 }
 client_handle_cookie_reject_of_length_24_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-24.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-24.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-24.pkt
 }
 client_handle_cookie_reject_of_length_24_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_25 cleanup
 client_handle_cookie_reject_of_length_25_head() {
     atf_set timeout 10
@@ -331,12 +381,14 @@ client_handle_cookie_reject_of_length_25_head() {
 }
 client_handle_cookie_reject_of_length_25_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-25.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-25.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-25.pkt
 }
 client_handle_cookie_reject_of_length_25_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_26 cleanup
 client_handle_cookie_reject_of_length_26_head() {
     atf_set timeout 10
@@ -344,12 +396,14 @@ client_handle_cookie_reject_of_length_26_head() {
 }
 client_handle_cookie_reject_of_length_26_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-26.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-26.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-26.pkt
 }
 client_handle_cookie_reject_of_length_26_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_27 cleanup
 client_handle_cookie_reject_of_length_27_head() {
     atf_set timeout 10
@@ -357,12 +411,14 @@ client_handle_cookie_reject_of_length_27_head() {
 }
 client_handle_cookie_reject_of_length_27_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-27.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-27.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-27.pkt
 }
 client_handle_cookie_reject_of_length_27_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_28 cleanup
 client_handle_cookie_reject_of_length_28_head() {
     atf_set timeout 10
@@ -370,12 +426,14 @@ client_handle_cookie_reject_of_length_28_head() {
 }
 client_handle_cookie_reject_of_length_28_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-28.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-28.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-28.pkt
 }
 client_handle_cookie_reject_of_length_28_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_29 cleanup
 client_handle_cookie_reject_of_length_29_head() {
     atf_set timeout 10
@@ -383,12 +441,14 @@ client_handle_cookie_reject_of_length_29_head() {
 }
 client_handle_cookie_reject_of_length_29_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-29.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-29.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-29.pkt
 }
 client_handle_cookie_reject_of_length_29_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_30 cleanup
 client_handle_cookie_reject_of_length_30_head() {
     atf_set timeout 10
@@ -396,12 +456,14 @@ client_handle_cookie_reject_of_length_30_head() {
 }
 client_handle_cookie_reject_of_length_30_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-30.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-30.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-30.pkt
 }
 client_handle_cookie_reject_of_length_30_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_31 cleanup
 client_handle_cookie_reject_of_length_31_head() {
     atf_set timeout 10
@@ -409,12 +471,14 @@ client_handle_cookie_reject_of_length_31_head() {
 }
 client_handle_cookie_reject_of_length_31_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-31.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-31.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-31.pkt
 }
 client_handle_cookie_reject_of_length_31_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_32 cleanup
 client_handle_cookie_reject_of_length_32_head() {
     atf_set timeout 10
@@ -422,12 +486,14 @@ client_handle_cookie_reject_of_length_32_head() {
 }
 client_handle_cookie_reject_of_length_32_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-32.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-32.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-32.pkt
 }
 client_handle_cookie_reject_of_length_32_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_33 cleanup
 client_handle_cookie_reject_of_length_33_head() {
     atf_set timeout 10
@@ -435,12 +501,14 @@ client_handle_cookie_reject_of_length_33_head() {
 }
 client_handle_cookie_reject_of_length_33_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-33.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-33.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-33.pkt
 }
 client_handle_cookie_reject_of_length_33_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_34 cleanup
 client_handle_cookie_reject_of_length_34_head() {
     atf_set timeout 10
@@ -448,12 +516,14 @@ client_handle_cookie_reject_of_length_34_head() {
 }
 client_handle_cookie_reject_of_length_34_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-34.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-34.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-34.pkt
 }
 client_handle_cookie_reject_of_length_34_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_35 cleanup
 client_handle_cookie_reject_of_length_35_head() {
     atf_set timeout 10
@@ -461,12 +531,14 @@ client_handle_cookie_reject_of_length_35_head() {
 }
 client_handle_cookie_reject_of_length_35_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-35.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-35.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-35.pkt
 }
 client_handle_cookie_reject_of_length_35_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_36 cleanup
 client_handle_cookie_reject_of_length_36_head() {
     atf_set timeout 10
@@ -474,12 +546,14 @@ client_handle_cookie_reject_of_length_36_head() {
 }
 client_handle_cookie_reject_of_length_36_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-36.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-36.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-36.pkt
 }
 client_handle_cookie_reject_of_length_36_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_37 cleanup
 client_handle_cookie_reject_of_length_37_head() {
     atf_set timeout 10
@@ -487,12 +561,14 @@ client_handle_cookie_reject_of_length_37_head() {
 }
 client_handle_cookie_reject_of_length_37_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-37.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-37.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-37.pkt
 }
 client_handle_cookie_reject_of_length_37_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_reject_of_length_38 cleanup
 client_handle_cookie_reject_of_length_38_head() {
     atf_set timeout 10
@@ -500,51 +576,59 @@ client_handle_cookie_reject_of_length_38_head() {
 }
 client_handle_cookie_reject_of_length_38_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-38.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-38.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-reject-of-length-38.pkt
 }
 client_handle_cookie_reject_of_length_38_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_01 cleanup
 client_handle_cookie_update_of_length_01_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_01_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-01.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-01.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-01.pkt
 }
 client_handle_cookie_update_of_length_01_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_02 cleanup
 client_handle_cookie_update_of_length_02_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_02_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-02.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-02.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-02.pkt
 }
 client_handle_cookie_update_of_length_02_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_03 cleanup
 client_handle_cookie_update_of_length_03_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_03_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-03.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-03.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-03.pkt
 }
 client_handle_cookie_update_of_length_03_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_04 cleanup
 client_handle_cookie_update_of_length_04_head() {
     atf_set timeout 10
@@ -552,25 +636,29 @@ client_handle_cookie_update_of_length_04_head() {
 }
 client_handle_cookie_update_of_length_04_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-04.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-04.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-04.pkt
 }
 client_handle_cookie_update_of_length_04_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_05 cleanup
 client_handle_cookie_update_of_length_05_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_05_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-05.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-05.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-05.pkt
 }
 client_handle_cookie_update_of_length_05_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_06 cleanup
 client_handle_cookie_update_of_length_06_head() {
     atf_set timeout 10
@@ -578,25 +666,29 @@ client_handle_cookie_update_of_length_06_head() {
 }
 client_handle_cookie_update_of_length_06_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-06.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-06.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-06.pkt
 }
 client_handle_cookie_update_of_length_06_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_07 cleanup
 client_handle_cookie_update_of_length_07_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_07_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-07.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-07.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-07.pkt
 }
 client_handle_cookie_update_of_length_07_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_08 cleanup
 client_handle_cookie_update_of_length_08_head() {
     atf_set timeout 10
@@ -604,25 +696,29 @@ client_handle_cookie_update_of_length_08_head() {
 }
 client_handle_cookie_update_of_length_08_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-08.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-08.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-08.pkt
 }
 client_handle_cookie_update_of_length_08_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_09 cleanup
 client_handle_cookie_update_of_length_09_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_09_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-09.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-09.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-09.pkt
 }
 client_handle_cookie_update_of_length_09_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_10 cleanup
 client_handle_cookie_update_of_length_10_head() {
     atf_set timeout 10
@@ -630,25 +726,29 @@ client_handle_cookie_update_of_length_10_head() {
 }
 client_handle_cookie_update_of_length_10_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-10.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-10.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-10.pkt
 }
 client_handle_cookie_update_of_length_10_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_11 cleanup
 client_handle_cookie_update_of_length_11_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_11_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-11.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-11.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-11.pkt
 }
 client_handle_cookie_update_of_length_11_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_12 cleanup
 client_handle_cookie_update_of_length_12_head() {
     atf_set timeout 10
@@ -656,25 +756,29 @@ client_handle_cookie_update_of_length_12_head() {
 }
 client_handle_cookie_update_of_length_12_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-12.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-12.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-12.pkt
 }
 client_handle_cookie_update_of_length_12_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_13 cleanup
 client_handle_cookie_update_of_length_13_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_13_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-13.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-13.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-13.pkt
 }
 client_handle_cookie_update_of_length_13_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_14 cleanup
 client_handle_cookie_update_of_length_14_head() {
     atf_set timeout 10
@@ -682,25 +786,29 @@ client_handle_cookie_update_of_length_14_head() {
 }
 client_handle_cookie_update_of_length_14_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-14.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-14.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-14.pkt
 }
 client_handle_cookie_update_of_length_14_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_15 cleanup
 client_handle_cookie_update_of_length_15_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_15_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-15.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-15.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-15.pkt
 }
 client_handle_cookie_update_of_length_15_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_16 cleanup
 client_handle_cookie_update_of_length_16_head() {
     atf_set timeout 10
@@ -708,298 +816,344 @@ client_handle_cookie_update_of_length_16_head() {
 }
 client_handle_cookie_update_of_length_16_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-16.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-16.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-16.pkt
 }
 client_handle_cookie_update_of_length_16_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_17 cleanup
 client_handle_cookie_update_of_length_17_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_17_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-17.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-17.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-17.pkt
 }
 client_handle_cookie_update_of_length_17_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_18 cleanup
 client_handle_cookie_update_of_length_18_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_18_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-18.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-18.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-18.pkt
 }
 client_handle_cookie_update_of_length_18_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_19 cleanup
 client_handle_cookie_update_of_length_19_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_19_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-19.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-19.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-19.pkt
 }
 client_handle_cookie_update_of_length_19_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_20 cleanup
 client_handle_cookie_update_of_length_20_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_20_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-20.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-20.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-20.pkt
 }
 client_handle_cookie_update_of_length_20_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_21 cleanup
 client_handle_cookie_update_of_length_21_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_21_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-21.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-21.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-21.pkt
 }
 client_handle_cookie_update_of_length_21_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_22 cleanup
 client_handle_cookie_update_of_length_22_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_22_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-22.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-22.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-22.pkt
 }
 client_handle_cookie_update_of_length_22_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_23 cleanup
 client_handle_cookie_update_of_length_23_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_23_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-23.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-23.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-23.pkt
 }
 client_handle_cookie_update_of_length_23_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_24 cleanup
 client_handle_cookie_update_of_length_24_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_24_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-24.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-24.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-24.pkt
 }
 client_handle_cookie_update_of_length_24_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_25 cleanup
 client_handle_cookie_update_of_length_25_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_25_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-25.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-25.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-25.pkt
 }
 client_handle_cookie_update_of_length_25_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_26 cleanup
 client_handle_cookie_update_of_length_26_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_26_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-26.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-26.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-26.pkt
 }
 client_handle_cookie_update_of_length_26_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_27 cleanup
 client_handle_cookie_update_of_length_27_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_27_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-27.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-27.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-27.pkt
 }
 client_handle_cookie_update_of_length_27_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_28 cleanup
 client_handle_cookie_update_of_length_28_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_28_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-28.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-28.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-28.pkt
 }
 client_handle_cookie_update_of_length_28_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_29 cleanup
 client_handle_cookie_update_of_length_29_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_29_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-29.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-29.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-29.pkt
 }
 client_handle_cookie_update_of_length_29_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_30 cleanup
 client_handle_cookie_update_of_length_30_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_30_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-30.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-30.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-30.pkt
 }
 client_handle_cookie_update_of_length_30_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_31 cleanup
 client_handle_cookie_update_of_length_31_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_31_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-31.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-31.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-31.pkt
 }
 client_handle_cookie_update_of_length_31_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_32 cleanup
 client_handle_cookie_update_of_length_32_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_32_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-32.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-32.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-32.pkt
 }
 client_handle_cookie_update_of_length_32_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_33 cleanup
 client_handle_cookie_update_of_length_33_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_33_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-33.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-33.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-33.pkt
 }
 client_handle_cookie_update_of_length_33_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_34 cleanup
 client_handle_cookie_update_of_length_34_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_34_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-34.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-34.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-34.pkt
 }
 client_handle_cookie_update_of_length_34_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_35 cleanup
 client_handle_cookie_update_of_length_35_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_35_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-35.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-35.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-35.pkt
 }
 client_handle_cookie_update_of_length_35_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_36 cleanup
 client_handle_cookie_update_of_length_36_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_36_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-36.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-36.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-36.pkt
 }
 client_handle_cookie_update_of_length_36_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_37 cleanup
 client_handle_cookie_update_of_length_37_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_37_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-37.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-37.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-37.pkt
 }
 client_handle_cookie_update_of_length_37_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_cookie_update_of_length_38 cleanup
 client_handle_cookie_update_of_length_38_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_handle_cookie_update_of_length_38_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-38.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-38.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-cookie-update-of-length-38.pkt
 }
 client_handle_cookie_update_of_length_38_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_01 cleanup
 client_handle_initial_cookie_of_length_01_head() {
     atf_set timeout 10
@@ -1007,12 +1161,14 @@ client_handle_initial_cookie_of_length_01_head() {
 }
 client_handle_initial_cookie_of_length_01_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-01.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-01.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-01.pkt
 }
 client_handle_initial_cookie_of_length_01_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_02 cleanup
 client_handle_initial_cookie_of_length_02_head() {
     atf_set timeout 10
@@ -1020,12 +1176,14 @@ client_handle_initial_cookie_of_length_02_head() {
 }
 client_handle_initial_cookie_of_length_02_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-02.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-02.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-02.pkt
 }
 client_handle_initial_cookie_of_length_02_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_03 cleanup
 client_handle_initial_cookie_of_length_03_head() {
     atf_set timeout 10
@@ -1033,12 +1191,14 @@ client_handle_initial_cookie_of_length_03_head() {
 }
 client_handle_initial_cookie_of_length_03_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-03.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-03.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-03.pkt
 }
 client_handle_initial_cookie_of_length_03_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_04 cleanup
 client_handle_initial_cookie_of_length_04_head() {
     atf_set timeout 10
@@ -1046,12 +1206,14 @@ client_handle_initial_cookie_of_length_04_head() {
 }
 client_handle_initial_cookie_of_length_04_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-04.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-04.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-04.pkt
 }
 client_handle_initial_cookie_of_length_04_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_05 cleanup
 client_handle_initial_cookie_of_length_05_head() {
     atf_set timeout 10
@@ -1059,12 +1221,14 @@ client_handle_initial_cookie_of_length_05_head() {
 }
 client_handle_initial_cookie_of_length_05_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-05.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-05.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-05.pkt
 }
 client_handle_initial_cookie_of_length_05_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_06 cleanup
 client_handle_initial_cookie_of_length_06_head() {
     atf_set timeout 10
@@ -1072,12 +1236,14 @@ client_handle_initial_cookie_of_length_06_head() {
 }
 client_handle_initial_cookie_of_length_06_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-06.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-06.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-06.pkt
 }
 client_handle_initial_cookie_of_length_06_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_07 cleanup
 client_handle_initial_cookie_of_length_07_head() {
     atf_set timeout 10
@@ -1085,12 +1251,14 @@ client_handle_initial_cookie_of_length_07_head() {
 }
 client_handle_initial_cookie_of_length_07_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-07.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-07.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-07.pkt
 }
 client_handle_initial_cookie_of_length_07_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_08 cleanup
 client_handle_initial_cookie_of_length_08_head() {
     atf_set timeout 10
@@ -1098,12 +1266,14 @@ client_handle_initial_cookie_of_length_08_head() {
 }
 client_handle_initial_cookie_of_length_08_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-08.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-08.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-08.pkt
 }
 client_handle_initial_cookie_of_length_08_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_09 cleanup
 client_handle_initial_cookie_of_length_09_head() {
     atf_set timeout 10
@@ -1111,12 +1281,14 @@ client_handle_initial_cookie_of_length_09_head() {
 }
 client_handle_initial_cookie_of_length_09_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-09.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-09.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-09.pkt
 }
 client_handle_initial_cookie_of_length_09_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_10 cleanup
 client_handle_initial_cookie_of_length_10_head() {
     atf_set timeout 10
@@ -1124,12 +1296,14 @@ client_handle_initial_cookie_of_length_10_head() {
 }
 client_handle_initial_cookie_of_length_10_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-10.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-10.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-10.pkt
 }
 client_handle_initial_cookie_of_length_10_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_11 cleanup
 client_handle_initial_cookie_of_length_11_head() {
     atf_set timeout 10
@@ -1137,12 +1311,14 @@ client_handle_initial_cookie_of_length_11_head() {
 }
 client_handle_initial_cookie_of_length_11_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-11.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-11.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-11.pkt
 }
 client_handle_initial_cookie_of_length_11_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_12 cleanup
 client_handle_initial_cookie_of_length_12_head() {
     atf_set timeout 10
@@ -1150,12 +1326,14 @@ client_handle_initial_cookie_of_length_12_head() {
 }
 client_handle_initial_cookie_of_length_12_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-12.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-12.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-12.pkt
 }
 client_handle_initial_cookie_of_length_12_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_13 cleanup
 client_handle_initial_cookie_of_length_13_head() {
     atf_set timeout 10
@@ -1163,12 +1341,14 @@ client_handle_initial_cookie_of_length_13_head() {
 }
 client_handle_initial_cookie_of_length_13_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-13.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-13.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-13.pkt
 }
 client_handle_initial_cookie_of_length_13_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_14 cleanup
 client_handle_initial_cookie_of_length_14_head() {
     atf_set timeout 10
@@ -1176,12 +1356,14 @@ client_handle_initial_cookie_of_length_14_head() {
 }
 client_handle_initial_cookie_of_length_14_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-14.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-14.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-14.pkt
 }
 client_handle_initial_cookie_of_length_14_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_15 cleanup
 client_handle_initial_cookie_of_length_15_head() {
     atf_set timeout 10
@@ -1189,12 +1371,14 @@ client_handle_initial_cookie_of_length_15_head() {
 }
 client_handle_initial_cookie_of_length_15_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-15.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-15.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-15.pkt
 }
 client_handle_initial_cookie_of_length_15_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_16 cleanup
 client_handle_initial_cookie_of_length_16_head() {
     atf_set timeout 10
@@ -1202,12 +1386,14 @@ client_handle_initial_cookie_of_length_16_head() {
 }
 client_handle_initial_cookie_of_length_16_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-16.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-16.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-16.pkt
 }
 client_handle_initial_cookie_of_length_16_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_17 cleanup
 client_handle_initial_cookie_of_length_17_head() {
     atf_set timeout 10
@@ -1215,12 +1401,14 @@ client_handle_initial_cookie_of_length_17_head() {
 }
 client_handle_initial_cookie_of_length_17_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-17.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-17.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-17.pkt
 }
 client_handle_initial_cookie_of_length_17_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_18 cleanup
 client_handle_initial_cookie_of_length_18_head() {
     atf_set timeout 10
@@ -1228,12 +1416,14 @@ client_handle_initial_cookie_of_length_18_head() {
 }
 client_handle_initial_cookie_of_length_18_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-18.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-18.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-18.pkt
 }
 client_handle_initial_cookie_of_length_18_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_19 cleanup
 client_handle_initial_cookie_of_length_19_head() {
     atf_set timeout 10
@@ -1241,12 +1431,14 @@ client_handle_initial_cookie_of_length_19_head() {
 }
 client_handle_initial_cookie_of_length_19_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-19.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-19.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-19.pkt
 }
 client_handle_initial_cookie_of_length_19_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_20 cleanup
 client_handle_initial_cookie_of_length_20_head() {
     atf_set timeout 10
@@ -1254,12 +1446,14 @@ client_handle_initial_cookie_of_length_20_head() {
 }
 client_handle_initial_cookie_of_length_20_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-20.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-20.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-20.pkt
 }
 client_handle_initial_cookie_of_length_20_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_21 cleanup
 client_handle_initial_cookie_of_length_21_head() {
     atf_set timeout 10
@@ -1267,12 +1461,14 @@ client_handle_initial_cookie_of_length_21_head() {
 }
 client_handle_initial_cookie_of_length_21_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-21.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-21.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-21.pkt
 }
 client_handle_initial_cookie_of_length_21_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_22 cleanup
 client_handle_initial_cookie_of_length_22_head() {
     atf_set timeout 10
@@ -1280,12 +1476,14 @@ client_handle_initial_cookie_of_length_22_head() {
 }
 client_handle_initial_cookie_of_length_22_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-22.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-22.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-22.pkt
 }
 client_handle_initial_cookie_of_length_22_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_23 cleanup
 client_handle_initial_cookie_of_length_23_head() {
     atf_set timeout 10
@@ -1293,12 +1491,14 @@ client_handle_initial_cookie_of_length_23_head() {
 }
 client_handle_initial_cookie_of_length_23_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-23.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-23.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-23.pkt
 }
 client_handle_initial_cookie_of_length_23_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_24 cleanup
 client_handle_initial_cookie_of_length_24_head() {
     atf_set timeout 10
@@ -1306,12 +1506,14 @@ client_handle_initial_cookie_of_length_24_head() {
 }
 client_handle_initial_cookie_of_length_24_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-24.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-24.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-24.pkt
 }
 client_handle_initial_cookie_of_length_24_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_25 cleanup
 client_handle_initial_cookie_of_length_25_head() {
     atf_set timeout 10
@@ -1319,12 +1521,14 @@ client_handle_initial_cookie_of_length_25_head() {
 }
 client_handle_initial_cookie_of_length_25_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-25.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-25.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-25.pkt
 }
 client_handle_initial_cookie_of_length_25_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_26 cleanup
 client_handle_initial_cookie_of_length_26_head() {
     atf_set timeout 10
@@ -1332,12 +1536,14 @@ client_handle_initial_cookie_of_length_26_head() {
 }
 client_handle_initial_cookie_of_length_26_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-26.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-26.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-26.pkt
 }
 client_handle_initial_cookie_of_length_26_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_27 cleanup
 client_handle_initial_cookie_of_length_27_head() {
     atf_set timeout 10
@@ -1345,12 +1551,14 @@ client_handle_initial_cookie_of_length_27_head() {
 }
 client_handle_initial_cookie_of_length_27_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-27.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-27.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-27.pkt
 }
 client_handle_initial_cookie_of_length_27_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_28 cleanup
 client_handle_initial_cookie_of_length_28_head() {
     atf_set timeout 10
@@ -1358,12 +1566,14 @@ client_handle_initial_cookie_of_length_28_head() {
 }
 client_handle_initial_cookie_of_length_28_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-28.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-28.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-28.pkt
 }
 client_handle_initial_cookie_of_length_28_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_29 cleanup
 client_handle_initial_cookie_of_length_29_head() {
     atf_set timeout 10
@@ -1371,12 +1581,14 @@ client_handle_initial_cookie_of_length_29_head() {
 }
 client_handle_initial_cookie_of_length_29_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-29.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-29.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-29.pkt
 }
 client_handle_initial_cookie_of_length_29_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_30 cleanup
 client_handle_initial_cookie_of_length_30_head() {
     atf_set timeout 10
@@ -1384,12 +1596,14 @@ client_handle_initial_cookie_of_length_30_head() {
 }
 client_handle_initial_cookie_of_length_30_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-30.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-30.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-30.pkt
 }
 client_handle_initial_cookie_of_length_30_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_31 cleanup
 client_handle_initial_cookie_of_length_31_head() {
     atf_set timeout 10
@@ -1397,12 +1611,14 @@ client_handle_initial_cookie_of_length_31_head() {
 }
 client_handle_initial_cookie_of_length_31_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-31.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-31.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-31.pkt
 }
 client_handle_initial_cookie_of_length_31_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_32 cleanup
 client_handle_initial_cookie_of_length_32_head() {
     atf_set timeout 10
@@ -1410,12 +1626,14 @@ client_handle_initial_cookie_of_length_32_head() {
 }
 client_handle_initial_cookie_of_length_32_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-32.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-32.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-32.pkt
 }
 client_handle_initial_cookie_of_length_32_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_33 cleanup
 client_handle_initial_cookie_of_length_33_head() {
     atf_set timeout 10
@@ -1423,12 +1641,14 @@ client_handle_initial_cookie_of_length_33_head() {
 }
 client_handle_initial_cookie_of_length_33_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-33.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-33.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-33.pkt
 }
 client_handle_initial_cookie_of_length_33_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_34 cleanup
 client_handle_initial_cookie_of_length_34_head() {
     atf_set timeout 10
@@ -1436,12 +1656,14 @@ client_handle_initial_cookie_of_length_34_head() {
 }
 client_handle_initial_cookie_of_length_34_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-34.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-34.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-34.pkt
 }
 client_handle_initial_cookie_of_length_34_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_35 cleanup
 client_handle_initial_cookie_of_length_35_head() {
     atf_set timeout 10
@@ -1449,12 +1671,14 @@ client_handle_initial_cookie_of_length_35_head() {
 }
 client_handle_initial_cookie_of_length_35_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-35.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-35.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-35.pkt
 }
 client_handle_initial_cookie_of_length_35_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_36 cleanup
 client_handle_initial_cookie_of_length_36_head() {
     atf_set timeout 10
@@ -1462,12 +1686,14 @@ client_handle_initial_cookie_of_length_36_head() {
 }
 client_handle_initial_cookie_of_length_36_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-36.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-36.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-36.pkt
 }
 client_handle_initial_cookie_of_length_36_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_37 cleanup
 client_handle_initial_cookie_of_length_37_head() {
     atf_set timeout 10
@@ -1475,12 +1701,14 @@ client_handle_initial_cookie_of_length_37_head() {
 }
 client_handle_initial_cookie_of_length_37_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-37.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-37.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-37.pkt
 }
 client_handle_initial_cookie_of_length_37_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_initial_cookie_of_length_38 cleanup
 client_handle_initial_cookie_of_length_38_head() {
     atf_set timeout 10
@@ -1488,12 +1716,14 @@ client_handle_initial_cookie_of_length_38_head() {
 }
 client_handle_initial_cookie_of_length_38_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-38.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-38.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-initial-cookie-of-length-38.pkt
 }
 client_handle_initial_cookie_of_length_38_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_handle_server_not_supporting_fast_open cleanup
 client_handle_server_not_supporting_fast_open_head() {
     atf_set timeout 10
@@ -1501,25 +1731,29 @@ client_handle_server_not_supporting_fast_open_head() {
 }
 client_handle_server_not_supporting_fast_open_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-handle-server-not-supporting-fast-open.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-server-not-supporting-fast-open.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-handle-server-not-supporting-fast-open.pkt
 }
 client_handle_server_not_supporting_fast_open_cleanup() {
     restore_sysctls
 }
+
 atf_test_case client_server_not_updating_cookie cleanup
 client_server_not_updating_cookie_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 client_server_not_updating_cookie_body() {
+    atf_expect_fail "Bug."
     
     save_sysctls /usr/local/share/tcptestsuite/fast-open/client/client-server-not-updating-cookie.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/fast-open/client/client-server-not-updating-cookie.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/fast-open/client/client-server-not-updating-cookie.pkt
 }
 client_server_not_updating_cookie_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_075 cleanup
 overlapping_050_075_head() {
     atf_set timeout 10
@@ -1527,12 +1761,14 @@ overlapping_050_075_head() {
 }
 overlapping_050_075_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-075.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-075.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-075.pkt
 }
 overlapping_050_075_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_100 cleanup
 overlapping_050_100_head() {
     atf_set timeout 10
@@ -1540,12 +1776,14 @@ overlapping_050_100_head() {
 }
 overlapping_050_100_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-100.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-100.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-100.pkt
 }
 overlapping_050_100_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_150 cleanup
 overlapping_050_150_head() {
     atf_set timeout 10
@@ -1553,12 +1791,14 @@ overlapping_050_150_head() {
 }
 overlapping_050_150_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-150.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-150.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-150.pkt
 }
 overlapping_050_150_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_200 cleanup
 overlapping_050_200_head() {
     atf_set timeout 10
@@ -1566,12 +1806,14 @@ overlapping_050_200_head() {
 }
 overlapping_050_200_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-200.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-200.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-200.pkt
 }
 overlapping_050_200_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_275 cleanup
 overlapping_050_275_head() {
     atf_set timeout 10
@@ -1579,12 +1821,14 @@ overlapping_050_275_head() {
 }
 overlapping_050_275_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-275.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-275.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-275.pkt
 }
 overlapping_050_275_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_300 cleanup
 overlapping_050_300_head() {
     atf_set timeout 10
@@ -1592,12 +1836,14 @@ overlapping_050_300_head() {
 }
 overlapping_050_300_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-300.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-300.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-300.pkt
 }
 overlapping_050_300_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_350 cleanup
 overlapping_050_350_head() {
     atf_set timeout 10
@@ -1605,12 +1851,14 @@ overlapping_050_350_head() {
 }
 overlapping_050_350_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-350.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-350.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-350.pkt
 }
 overlapping_050_350_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_400 cleanup
 overlapping_050_400_head() {
     atf_set timeout 10
@@ -1618,12 +1866,14 @@ overlapping_050_400_head() {
 }
 overlapping_050_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-400.pkt
 }
 overlapping_050_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_475 cleanup
 overlapping_050_475_head() {
     atf_set timeout 10
@@ -1631,12 +1881,14 @@ overlapping_050_475_head() {
 }
 overlapping_050_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-475.pkt
 }
 overlapping_050_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_500 cleanup
 overlapping_050_500_head() {
     atf_set timeout 10
@@ -1644,12 +1896,14 @@ overlapping_050_500_head() {
 }
 overlapping_050_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-500.pkt
 }
 overlapping_050_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_550 cleanup
 overlapping_050_550_head() {
     atf_set timeout 10
@@ -1657,12 +1911,14 @@ overlapping_050_550_head() {
 }
 overlapping_050_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-550.pkt
 }
 overlapping_050_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_600 cleanup
 overlapping_050_600_head() {
     atf_set timeout 10
@@ -1670,12 +1926,14 @@ overlapping_050_600_head() {
 }
 overlapping_050_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-600.pkt
 }
 overlapping_050_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_675 cleanup
 overlapping_050_675_head() {
     atf_set timeout 10
@@ -1683,12 +1941,14 @@ overlapping_050_675_head() {
 }
 overlapping_050_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-675.pkt
 }
 overlapping_050_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_050_700 cleanup
 overlapping_050_700_head() {
     atf_set timeout 10
@@ -1696,12 +1956,14 @@ overlapping_050_700_head() {
 }
 overlapping_050_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-050-700.pkt
 }
 overlapping_050_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_150 cleanup
 overlapping_100_150_head() {
     atf_set timeout 10
@@ -1709,12 +1971,14 @@ overlapping_100_150_head() {
 }
 overlapping_100_150_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-150.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-150.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-150.pkt
 }
 overlapping_100_150_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_200 cleanup
 overlapping_100_200_head() {
     atf_set timeout 10
@@ -1722,12 +1986,14 @@ overlapping_100_200_head() {
 }
 overlapping_100_200_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-200.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-200.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-200.pkt
 }
 overlapping_100_200_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_275 cleanup
 overlapping_100_275_head() {
     atf_set timeout 10
@@ -1735,12 +2001,14 @@ overlapping_100_275_head() {
 }
 overlapping_100_275_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-275.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-275.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-275.pkt
 }
 overlapping_100_275_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_300 cleanup
 overlapping_100_300_head() {
     atf_set timeout 10
@@ -1748,12 +2016,14 @@ overlapping_100_300_head() {
 }
 overlapping_100_300_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-300.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-300.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-300.pkt
 }
 overlapping_100_300_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_350 cleanup
 overlapping_100_350_head() {
     atf_set timeout 10
@@ -1761,12 +2031,14 @@ overlapping_100_350_head() {
 }
 overlapping_100_350_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-350.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-350.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-350.pkt
 }
 overlapping_100_350_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_400 cleanup
 overlapping_100_400_head() {
     atf_set timeout 10
@@ -1774,12 +2046,14 @@ overlapping_100_400_head() {
 }
 overlapping_100_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-400.pkt
 }
 overlapping_100_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_475 cleanup
 overlapping_100_475_head() {
     atf_set timeout 10
@@ -1787,12 +2061,14 @@ overlapping_100_475_head() {
 }
 overlapping_100_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-475.pkt
 }
 overlapping_100_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_500 cleanup
 overlapping_100_500_head() {
     atf_set timeout 10
@@ -1800,12 +2076,14 @@ overlapping_100_500_head() {
 }
 overlapping_100_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-500.pkt
 }
 overlapping_100_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_550 cleanup
 overlapping_100_550_head() {
     atf_set timeout 10
@@ -1813,12 +2091,14 @@ overlapping_100_550_head() {
 }
 overlapping_100_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-550.pkt
 }
 overlapping_100_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_600 cleanup
 overlapping_100_600_head() {
     atf_set timeout 10
@@ -1826,12 +2106,14 @@ overlapping_100_600_head() {
 }
 overlapping_100_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-600.pkt
 }
 overlapping_100_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_675 cleanup
 overlapping_100_675_head() {
     atf_set timeout 10
@@ -1839,12 +2121,14 @@ overlapping_100_675_head() {
 }
 overlapping_100_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-675.pkt
 }
 overlapping_100_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_100_700 cleanup
 overlapping_100_700_head() {
     atf_set timeout 10
@@ -1852,12 +2136,14 @@ overlapping_100_700_head() {
 }
 overlapping_100_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-100-700.pkt
 }
 overlapping_100_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_200 cleanup
 overlapping_150_200_head() {
     atf_set timeout 10
@@ -1865,12 +2151,14 @@ overlapping_150_200_head() {
 }
 overlapping_150_200_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-200.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-200.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-200.pkt
 }
 overlapping_150_200_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_275 cleanup
 overlapping_150_275_head() {
     atf_set timeout 10
@@ -1878,12 +2166,14 @@ overlapping_150_275_head() {
 }
 overlapping_150_275_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-275.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-275.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-275.pkt
 }
 overlapping_150_275_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_300 cleanup
 overlapping_150_300_head() {
     atf_set timeout 10
@@ -1891,12 +2181,14 @@ overlapping_150_300_head() {
 }
 overlapping_150_300_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-300.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-300.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-300.pkt
 }
 overlapping_150_300_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_350 cleanup
 overlapping_150_350_head() {
     atf_set timeout 10
@@ -1904,12 +2196,14 @@ overlapping_150_350_head() {
 }
 overlapping_150_350_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-350.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-350.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-350.pkt
 }
 overlapping_150_350_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_400 cleanup
 overlapping_150_400_head() {
     atf_set timeout 10
@@ -1917,12 +2211,14 @@ overlapping_150_400_head() {
 }
 overlapping_150_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-400.pkt
 }
 overlapping_150_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_475 cleanup
 overlapping_150_475_head() {
     atf_set timeout 10
@@ -1930,12 +2226,14 @@ overlapping_150_475_head() {
 }
 overlapping_150_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-475.pkt
 }
 overlapping_150_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_500 cleanup
 overlapping_150_500_head() {
     atf_set timeout 10
@@ -1943,12 +2241,14 @@ overlapping_150_500_head() {
 }
 overlapping_150_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-500.pkt
 }
 overlapping_150_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_550 cleanup
 overlapping_150_550_head() {
     atf_set timeout 10
@@ -1956,12 +2256,14 @@ overlapping_150_550_head() {
 }
 overlapping_150_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-550.pkt
 }
 overlapping_150_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_600 cleanup
 overlapping_150_600_head() {
     atf_set timeout 10
@@ -1969,12 +2271,14 @@ overlapping_150_600_head() {
 }
 overlapping_150_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-600.pkt
 }
 overlapping_150_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_675 cleanup
 overlapping_150_675_head() {
     atf_set timeout 10
@@ -1982,12 +2286,14 @@ overlapping_150_675_head() {
 }
 overlapping_150_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-675.pkt
 }
 overlapping_150_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_150_700 cleanup
 overlapping_150_700_head() {
     atf_set timeout 10
@@ -1995,12 +2301,14 @@ overlapping_150_700_head() {
 }
 overlapping_150_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-150-700.pkt
 }
 overlapping_150_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_275 cleanup
 overlapping_200_275_head() {
     atf_set timeout 10
@@ -2008,12 +2316,14 @@ overlapping_200_275_head() {
 }
 overlapping_200_275_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-275.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-275.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-275.pkt
 }
 overlapping_200_275_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_300 cleanup
 overlapping_200_300_head() {
     atf_set timeout 10
@@ -2021,12 +2331,14 @@ overlapping_200_300_head() {
 }
 overlapping_200_300_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-300.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-300.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-300.pkt
 }
 overlapping_200_300_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_32200 cleanup
 overlapping_200_32200_head() {
     atf_set timeout 10
@@ -2034,12 +2346,14 @@ overlapping_200_32200_head() {
 }
 overlapping_200_32200_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-32200.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-32200.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-32200.pkt
 }
 overlapping_200_32200_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_350 cleanup
 overlapping_200_350_head() {
     atf_set timeout 10
@@ -2047,12 +2361,14 @@ overlapping_200_350_head() {
 }
 overlapping_200_350_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-350.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-350.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-350.pkt
 }
 overlapping_200_350_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_400 cleanup
 overlapping_200_400_head() {
     atf_set timeout 10
@@ -2060,12 +2376,14 @@ overlapping_200_400_head() {
 }
 overlapping_200_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-400.pkt
 }
 overlapping_200_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_475 cleanup
 overlapping_200_475_head() {
     atf_set timeout 10
@@ -2073,12 +2391,14 @@ overlapping_200_475_head() {
 }
 overlapping_200_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-475.pkt
 }
 overlapping_200_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_500 cleanup
 overlapping_200_500_head() {
     atf_set timeout 10
@@ -2086,12 +2406,14 @@ overlapping_200_500_head() {
 }
 overlapping_200_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-500.pkt
 }
 overlapping_200_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_550 cleanup
 overlapping_200_550_head() {
     atf_set timeout 10
@@ -2099,12 +2421,14 @@ overlapping_200_550_head() {
 }
 overlapping_200_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-550.pkt
 }
 overlapping_200_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_600 cleanup
 overlapping_200_600_head() {
     atf_set timeout 10
@@ -2112,12 +2436,14 @@ overlapping_200_600_head() {
 }
 overlapping_200_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-600.pkt
 }
 overlapping_200_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_675 cleanup
 overlapping_200_675_head() {
     atf_set timeout 10
@@ -2125,12 +2451,14 @@ overlapping_200_675_head() {
 }
 overlapping_200_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-675.pkt
 }
 overlapping_200_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_200_700 cleanup
 overlapping_200_700_head() {
     atf_set timeout 10
@@ -2138,12 +2466,14 @@ overlapping_200_700_head() {
 }
 overlapping_200_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-200-700.pkt
 }
 overlapping_200_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_275 cleanup
 overlapping_250_275_head() {
     atf_set timeout 10
@@ -2151,12 +2481,14 @@ overlapping_250_275_head() {
 }
 overlapping_250_275_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-275.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-275.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-275.pkt
 }
 overlapping_250_275_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_300 cleanup
 overlapping_250_300_head() {
     atf_set timeout 10
@@ -2164,12 +2496,14 @@ overlapping_250_300_head() {
 }
 overlapping_250_300_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-300.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-300.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-300.pkt
 }
 overlapping_250_300_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_350 cleanup
 overlapping_250_350_head() {
     atf_set timeout 10
@@ -2177,12 +2511,14 @@ overlapping_250_350_head() {
 }
 overlapping_250_350_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-350.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-350.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-350.pkt
 }
 overlapping_250_350_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_400 cleanup
 overlapping_250_400_head() {
     atf_set timeout 10
@@ -2190,12 +2526,14 @@ overlapping_250_400_head() {
 }
 overlapping_250_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-400.pkt
 }
 overlapping_250_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_475 cleanup
 overlapping_250_475_head() {
     atf_set timeout 10
@@ -2203,12 +2541,14 @@ overlapping_250_475_head() {
 }
 overlapping_250_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-475.pkt
 }
 overlapping_250_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_500 cleanup
 overlapping_250_500_head() {
     atf_set timeout 10
@@ -2216,12 +2556,14 @@ overlapping_250_500_head() {
 }
 overlapping_250_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-500.pkt
 }
 overlapping_250_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_550 cleanup
 overlapping_250_550_head() {
     atf_set timeout 10
@@ -2229,12 +2571,14 @@ overlapping_250_550_head() {
 }
 overlapping_250_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-550.pkt
 }
 overlapping_250_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_600 cleanup
 overlapping_250_600_head() {
     atf_set timeout 10
@@ -2242,12 +2586,14 @@ overlapping_250_600_head() {
 }
 overlapping_250_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-600.pkt
 }
 overlapping_250_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_675 cleanup
 overlapping_250_675_head() {
     atf_set timeout 10
@@ -2255,12 +2601,14 @@ overlapping_250_675_head() {
 }
 overlapping_250_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-675.pkt
 }
 overlapping_250_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_250_700 cleanup
 overlapping_250_700_head() {
     atf_set timeout 10
@@ -2268,12 +2616,14 @@ overlapping_250_700_head() {
 }
 overlapping_250_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-250-700.pkt
 }
 overlapping_250_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_350 cleanup
 overlapping_300_350_head() {
     atf_set timeout 10
@@ -2281,12 +2631,14 @@ overlapping_300_350_head() {
 }
 overlapping_300_350_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-350.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-350.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-350.pkt
 }
 overlapping_300_350_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_400 cleanup
 overlapping_300_400_head() {
     atf_set timeout 10
@@ -2294,12 +2646,14 @@ overlapping_300_400_head() {
 }
 overlapping_300_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-400.pkt
 }
 overlapping_300_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_475 cleanup
 overlapping_300_475_head() {
     atf_set timeout 10
@@ -2307,12 +2661,14 @@ overlapping_300_475_head() {
 }
 overlapping_300_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-475.pkt
 }
 overlapping_300_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_500 cleanup
 overlapping_300_500_head() {
     atf_set timeout 10
@@ -2320,12 +2676,14 @@ overlapping_300_500_head() {
 }
 overlapping_300_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-500.pkt
 }
 overlapping_300_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_550 cleanup
 overlapping_300_550_head() {
     atf_set timeout 10
@@ -2333,12 +2691,14 @@ overlapping_300_550_head() {
 }
 overlapping_300_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-550.pkt
 }
 overlapping_300_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_600 cleanup
 overlapping_300_600_head() {
     atf_set timeout 10
@@ -2346,12 +2706,14 @@ overlapping_300_600_head() {
 }
 overlapping_300_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-600.pkt
 }
 overlapping_300_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_675 cleanup
 overlapping_300_675_head() {
     atf_set timeout 10
@@ -2359,12 +2721,14 @@ overlapping_300_675_head() {
 }
 overlapping_300_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-675.pkt
 }
 overlapping_300_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_300_700 cleanup
 overlapping_300_700_head() {
     atf_set timeout 10
@@ -2372,12 +2736,14 @@ overlapping_300_700_head() {
 }
 overlapping_300_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-300-700.pkt
 }
 overlapping_300_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_400 cleanup
 overlapping_350_400_head() {
     atf_set timeout 10
@@ -2385,12 +2751,14 @@ overlapping_350_400_head() {
 }
 overlapping_350_400_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-400.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-400.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-400.pkt
 }
 overlapping_350_400_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_475 cleanup
 overlapping_350_475_head() {
     atf_set timeout 10
@@ -2398,12 +2766,14 @@ overlapping_350_475_head() {
 }
 overlapping_350_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-475.pkt
 }
 overlapping_350_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_500 cleanup
 overlapping_350_500_head() {
     atf_set timeout 10
@@ -2411,12 +2781,14 @@ overlapping_350_500_head() {
 }
 overlapping_350_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-500.pkt
 }
 overlapping_350_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_550 cleanup
 overlapping_350_550_head() {
     atf_set timeout 10
@@ -2424,12 +2796,14 @@ overlapping_350_550_head() {
 }
 overlapping_350_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-550.pkt
 }
 overlapping_350_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_600 cleanup
 overlapping_350_600_head() {
     atf_set timeout 10
@@ -2437,12 +2811,14 @@ overlapping_350_600_head() {
 }
 overlapping_350_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-600.pkt
 }
 overlapping_350_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_675 cleanup
 overlapping_350_675_head() {
     atf_set timeout 10
@@ -2450,12 +2826,14 @@ overlapping_350_675_head() {
 }
 overlapping_350_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-675.pkt
 }
 overlapping_350_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_350_700 cleanup
 overlapping_350_700_head() {
     atf_set timeout 10
@@ -2463,12 +2841,14 @@ overlapping_350_700_head() {
 }
 overlapping_350_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-350-700.pkt
 }
 overlapping_350_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_400_475 cleanup
 overlapping_400_475_head() {
     atf_set timeout 10
@@ -2476,12 +2856,14 @@ overlapping_400_475_head() {
 }
 overlapping_400_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-475.pkt
 }
 overlapping_400_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_400_500 cleanup
 overlapping_400_500_head() {
     atf_set timeout 10
@@ -2489,12 +2871,14 @@ overlapping_400_500_head() {
 }
 overlapping_400_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-500.pkt
 }
 overlapping_400_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_400_550 cleanup
 overlapping_400_550_head() {
     atf_set timeout 10
@@ -2502,12 +2886,14 @@ overlapping_400_550_head() {
 }
 overlapping_400_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-550.pkt
 }
 overlapping_400_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_400_600 cleanup
 overlapping_400_600_head() {
     atf_set timeout 10
@@ -2515,12 +2901,14 @@ overlapping_400_600_head() {
 }
 overlapping_400_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-600.pkt
 }
 overlapping_400_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_400_675 cleanup
 overlapping_400_675_head() {
     atf_set timeout 10
@@ -2528,12 +2916,14 @@ overlapping_400_675_head() {
 }
 overlapping_400_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-675.pkt
 }
 overlapping_400_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_400_700 cleanup
 overlapping_400_700_head() {
     atf_set timeout 10
@@ -2541,12 +2931,14 @@ overlapping_400_700_head() {
 }
 overlapping_400_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-400-700.pkt
 }
 overlapping_400_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_450_475 cleanup
 overlapping_450_475_head() {
     atf_set timeout 10
@@ -2554,12 +2946,14 @@ overlapping_450_475_head() {
 }
 overlapping_450_475_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-475.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-475.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-475.pkt
 }
 overlapping_450_475_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_450_500 cleanup
 overlapping_450_500_head() {
     atf_set timeout 10
@@ -2567,12 +2961,14 @@ overlapping_450_500_head() {
 }
 overlapping_450_500_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-500.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-500.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-500.pkt
 }
 overlapping_450_500_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_450_550 cleanup
 overlapping_450_550_head() {
     atf_set timeout 10
@@ -2580,12 +2976,14 @@ overlapping_450_550_head() {
 }
 overlapping_450_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-550.pkt
 }
 overlapping_450_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_450_600 cleanup
 overlapping_450_600_head() {
     atf_set timeout 10
@@ -2593,12 +2991,14 @@ overlapping_450_600_head() {
 }
 overlapping_450_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-600.pkt
 }
 overlapping_450_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_450_675 cleanup
 overlapping_450_675_head() {
     atf_set timeout 10
@@ -2606,12 +3006,14 @@ overlapping_450_675_head() {
 }
 overlapping_450_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-675.pkt
 }
 overlapping_450_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_450_700 cleanup
 overlapping_450_700_head() {
     atf_set timeout 10
@@ -2619,12 +3021,14 @@ overlapping_450_700_head() {
 }
 overlapping_450_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-450-700.pkt
 }
 overlapping_450_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_500_550 cleanup
 overlapping_500_550_head() {
     atf_set timeout 10
@@ -2632,12 +3036,14 @@ overlapping_500_550_head() {
 }
 overlapping_500_550_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-550.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-550.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-550.pkt
 }
 overlapping_500_550_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_500_600 cleanup
 overlapping_500_600_head() {
     atf_set timeout 10
@@ -2645,12 +3051,14 @@ overlapping_500_600_head() {
 }
 overlapping_500_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-600.pkt
 }
 overlapping_500_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_500_675 cleanup
 overlapping_500_675_head() {
     atf_set timeout 10
@@ -2658,12 +3066,14 @@ overlapping_500_675_head() {
 }
 overlapping_500_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-675.pkt
 }
 overlapping_500_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_500_700 cleanup
 overlapping_500_700_head() {
     atf_set timeout 10
@@ -2671,12 +3081,14 @@ overlapping_500_700_head() {
 }
 overlapping_500_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-500-700.pkt
 }
 overlapping_500_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_550_600 cleanup
 overlapping_550_600_head() {
     atf_set timeout 10
@@ -2684,12 +3096,14 @@ overlapping_550_600_head() {
 }
 overlapping_550_600_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-600.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-600.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-600.pkt
 }
 overlapping_550_600_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_550_675 cleanup
 overlapping_550_675_head() {
     atf_set timeout 10
@@ -2697,12 +3111,14 @@ overlapping_550_675_head() {
 }
 overlapping_550_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-675.pkt
 }
 overlapping_550_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_550_700 cleanup
 overlapping_550_700_head() {
     atf_set timeout 10
@@ -2710,12 +3126,14 @@ overlapping_550_700_head() {
 }
 overlapping_550_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-550-700.pkt
 }
 overlapping_550_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_600_675 cleanup
 overlapping_600_675_head() {
     atf_set timeout 10
@@ -2723,12 +3141,14 @@ overlapping_600_675_head() {
 }
 overlapping_600_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-600-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-600-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-600-675.pkt
 }
 overlapping_600_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_600_700 cleanup
 overlapping_600_700_head() {
     atf_set timeout 10
@@ -2736,12 +3156,14 @@ overlapping_600_700_head() {
 }
 overlapping_600_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-600-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-600-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-600-700.pkt
 }
 overlapping_600_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_650_675 cleanup
 overlapping_650_675_head() {
     atf_set timeout 10
@@ -2749,12 +3171,14 @@ overlapping_650_675_head() {
 }
 overlapping_650_675_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-650-675.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-650-675.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-650-675.pkt
 }
 overlapping_650_675_cleanup() {
     restore_sysctls
 }
+
 atf_test_case overlapping_650_700 cleanup
 overlapping_650_700_head() {
     atf_set timeout 10
@@ -2762,12 +3186,14 @@ overlapping_650_700_head() {
 }
 overlapping_650_700_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-650-700.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-650-700.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/overlapping-650-700.pkt
 }
 overlapping_650_700_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_12345 cleanup
 reordering_12345_head() {
     atf_set timeout 10
@@ -2775,12 +3201,14 @@ reordering_12345_head() {
 }
 reordering_12345_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12345.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12345.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12345.pkt
 }
 reordering_12345_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_12354 cleanup
 reordering_12354_head() {
     atf_set timeout 10
@@ -2788,12 +3216,14 @@ reordering_12354_head() {
 }
 reordering_12354_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12354.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12354.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12354.pkt
 }
 reordering_12354_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_12435 cleanup
 reordering_12435_head() {
     atf_set timeout 10
@@ -2801,12 +3231,14 @@ reordering_12435_head() {
 }
 reordering_12435_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12435.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12435.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12435.pkt
 }
 reordering_12435_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_12453 cleanup
 reordering_12453_head() {
     atf_set timeout 10
@@ -2814,12 +3246,14 @@ reordering_12453_head() {
 }
 reordering_12453_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12453.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12453.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12453.pkt
 }
 reordering_12453_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_12534 cleanup
 reordering_12534_head() {
     atf_set timeout 10
@@ -2827,12 +3261,14 @@ reordering_12534_head() {
 }
 reordering_12534_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12534.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12534.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12534.pkt
 }
 reordering_12534_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_12543 cleanup
 reordering_12543_head() {
     atf_set timeout 10
@@ -2840,12 +3276,14 @@ reordering_12543_head() {
 }
 reordering_12543_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12543.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12543.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-12543.pkt
 }
 reordering_12543_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_13245 cleanup
 reordering_13245_head() {
     atf_set timeout 10
@@ -2853,12 +3291,14 @@ reordering_13245_head() {
 }
 reordering_13245_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13245.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13245.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13245.pkt
 }
 reordering_13245_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_13254 cleanup
 reordering_13254_head() {
     atf_set timeout 10
@@ -2866,12 +3306,14 @@ reordering_13254_head() {
 }
 reordering_13254_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13254.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13254.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13254.pkt
 }
 reordering_13254_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_13425 cleanup
 reordering_13425_head() {
     atf_set timeout 10
@@ -2879,12 +3321,14 @@ reordering_13425_head() {
 }
 reordering_13425_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13425.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13425.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13425.pkt
 }
 reordering_13425_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_13452 cleanup
 reordering_13452_head() {
     atf_set timeout 10
@@ -2892,12 +3336,14 @@ reordering_13452_head() {
 }
 reordering_13452_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13452.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13452.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13452.pkt
 }
 reordering_13452_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_13524 cleanup
 reordering_13524_head() {
     atf_set timeout 10
@@ -2905,12 +3351,14 @@ reordering_13524_head() {
 }
 reordering_13524_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13524.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13524.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13524.pkt
 }
 reordering_13524_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_13542 cleanup
 reordering_13542_head() {
     atf_set timeout 10
@@ -2918,12 +3366,14 @@ reordering_13542_head() {
 }
 reordering_13542_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13542.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13542.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-13542.pkt
 }
 reordering_13542_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_14235 cleanup
 reordering_14235_head() {
     atf_set timeout 10
@@ -2931,12 +3381,14 @@ reordering_14235_head() {
 }
 reordering_14235_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14235.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14235.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14235.pkt
 }
 reordering_14235_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_14253 cleanup
 reordering_14253_head() {
     atf_set timeout 10
@@ -2944,12 +3396,14 @@ reordering_14253_head() {
 }
 reordering_14253_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14253.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14253.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14253.pkt
 }
 reordering_14253_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_14325 cleanup
 reordering_14325_head() {
     atf_set timeout 10
@@ -2957,12 +3411,14 @@ reordering_14325_head() {
 }
 reordering_14325_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14325.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14325.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14325.pkt
 }
 reordering_14325_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_14352 cleanup
 reordering_14352_head() {
     atf_set timeout 10
@@ -2970,12 +3426,14 @@ reordering_14352_head() {
 }
 reordering_14352_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14352.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14352.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14352.pkt
 }
 reordering_14352_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_14523 cleanup
 reordering_14523_head() {
     atf_set timeout 10
@@ -2983,12 +3441,14 @@ reordering_14523_head() {
 }
 reordering_14523_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14523.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14523.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14523.pkt
 }
 reordering_14523_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_14532 cleanup
 reordering_14532_head() {
     atf_set timeout 10
@@ -2996,12 +3456,14 @@ reordering_14532_head() {
 }
 reordering_14532_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14532.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14532.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-14532.pkt
 }
 reordering_14532_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_15234 cleanup
 reordering_15234_head() {
     atf_set timeout 10
@@ -3009,12 +3471,14 @@ reordering_15234_head() {
 }
 reordering_15234_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15234.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15234.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15234.pkt
 }
 reordering_15234_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_15243 cleanup
 reordering_15243_head() {
     atf_set timeout 10
@@ -3022,12 +3486,14 @@ reordering_15243_head() {
 }
 reordering_15243_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15243.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15243.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15243.pkt
 }
 reordering_15243_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_15324 cleanup
 reordering_15324_head() {
     atf_set timeout 10
@@ -3035,12 +3501,14 @@ reordering_15324_head() {
 }
 reordering_15324_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15324.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15324.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15324.pkt
 }
 reordering_15324_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_15342 cleanup
 reordering_15342_head() {
     atf_set timeout 10
@@ -3048,12 +3516,14 @@ reordering_15342_head() {
 }
 reordering_15342_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15342.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15342.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15342.pkt
 }
 reordering_15342_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_15423 cleanup
 reordering_15423_head() {
     atf_set timeout 10
@@ -3061,12 +3531,14 @@ reordering_15423_head() {
 }
 reordering_15423_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15423.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15423.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15423.pkt
 }
 reordering_15423_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_15432 cleanup
 reordering_15432_head() {
     atf_set timeout 10
@@ -3074,12 +3546,14 @@ reordering_15432_head() {
 }
 reordering_15432_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15432.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15432.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-15432.pkt
 }
 reordering_15432_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_21345 cleanup
 reordering_21345_head() {
     atf_set timeout 10
@@ -3087,12 +3561,14 @@ reordering_21345_head() {
 }
 reordering_21345_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21345.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21345.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21345.pkt
 }
 reordering_21345_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_21354 cleanup
 reordering_21354_head() {
     atf_set timeout 10
@@ -3100,12 +3576,14 @@ reordering_21354_head() {
 }
 reordering_21354_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21354.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21354.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21354.pkt
 }
 reordering_21354_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_21435 cleanup
 reordering_21435_head() {
     atf_set timeout 10
@@ -3113,12 +3591,14 @@ reordering_21435_head() {
 }
 reordering_21435_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21435.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21435.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21435.pkt
 }
 reordering_21435_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_21453 cleanup
 reordering_21453_head() {
     atf_set timeout 10
@@ -3126,12 +3606,14 @@ reordering_21453_head() {
 }
 reordering_21453_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21453.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21453.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21453.pkt
 }
 reordering_21453_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_21534 cleanup
 reordering_21534_head() {
     atf_set timeout 10
@@ -3139,12 +3621,14 @@ reordering_21534_head() {
 }
 reordering_21534_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21534.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21534.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21534.pkt
 }
 reordering_21534_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_21543 cleanup
 reordering_21543_head() {
     atf_set timeout 10
@@ -3152,12 +3636,14 @@ reordering_21543_head() {
 }
 reordering_21543_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21543.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21543.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-21543.pkt
 }
 reordering_21543_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_23145 cleanup
 reordering_23145_head() {
     atf_set timeout 10
@@ -3165,12 +3651,14 @@ reordering_23145_head() {
 }
 reordering_23145_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23145.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23145.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23145.pkt
 }
 reordering_23145_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_23154 cleanup
 reordering_23154_head() {
     atf_set timeout 10
@@ -3178,12 +3666,14 @@ reordering_23154_head() {
 }
 reordering_23154_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23154.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23154.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23154.pkt
 }
 reordering_23154_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_23415 cleanup
 reordering_23415_head() {
     atf_set timeout 10
@@ -3191,12 +3681,14 @@ reordering_23415_head() {
 }
 reordering_23415_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23415.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23415.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23415.pkt
 }
 reordering_23415_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_23451 cleanup
 reordering_23451_head() {
     atf_set timeout 10
@@ -3204,12 +3696,14 @@ reordering_23451_head() {
 }
 reordering_23451_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23451.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23451.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23451.pkt
 }
 reordering_23451_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_23514 cleanup
 reordering_23514_head() {
     atf_set timeout 10
@@ -3217,12 +3711,14 @@ reordering_23514_head() {
 }
 reordering_23514_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23514.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23514.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23514.pkt
 }
 reordering_23514_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_23541 cleanup
 reordering_23541_head() {
     atf_set timeout 10
@@ -3230,12 +3726,14 @@ reordering_23541_head() {
 }
 reordering_23541_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23541.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23541.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-23541.pkt
 }
 reordering_23541_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_24135 cleanup
 reordering_24135_head() {
     atf_set timeout 10
@@ -3243,12 +3741,14 @@ reordering_24135_head() {
 }
 reordering_24135_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24135.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24135.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24135.pkt
 }
 reordering_24135_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_24153 cleanup
 reordering_24153_head() {
     atf_set timeout 10
@@ -3256,12 +3756,14 @@ reordering_24153_head() {
 }
 reordering_24153_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24153.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24153.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24153.pkt
 }
 reordering_24153_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_24315 cleanup
 reordering_24315_head() {
     atf_set timeout 10
@@ -3269,12 +3771,14 @@ reordering_24315_head() {
 }
 reordering_24315_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24315.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24315.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24315.pkt
 }
 reordering_24315_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_24351 cleanup
 reordering_24351_head() {
     atf_set timeout 10
@@ -3282,12 +3786,14 @@ reordering_24351_head() {
 }
 reordering_24351_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24351.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24351.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24351.pkt
 }
 reordering_24351_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_24513 cleanup
 reordering_24513_head() {
     atf_set timeout 10
@@ -3295,12 +3801,14 @@ reordering_24513_head() {
 }
 reordering_24513_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24513.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24513.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24513.pkt
 }
 reordering_24513_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_24531 cleanup
 reordering_24531_head() {
     atf_set timeout 10
@@ -3308,12 +3816,14 @@ reordering_24531_head() {
 }
 reordering_24531_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24531.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24531.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-24531.pkt
 }
 reordering_24531_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_25134 cleanup
 reordering_25134_head() {
     atf_set timeout 10
@@ -3321,12 +3831,14 @@ reordering_25134_head() {
 }
 reordering_25134_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25134.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25134.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25134.pkt
 }
 reordering_25134_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_25143 cleanup
 reordering_25143_head() {
     atf_set timeout 10
@@ -3334,12 +3846,14 @@ reordering_25143_head() {
 }
 reordering_25143_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25143.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25143.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25143.pkt
 }
 reordering_25143_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_25314 cleanup
 reordering_25314_head() {
     atf_set timeout 10
@@ -3347,12 +3861,14 @@ reordering_25314_head() {
 }
 reordering_25314_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25314.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25314.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25314.pkt
 }
 reordering_25314_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_25341 cleanup
 reordering_25341_head() {
     atf_set timeout 10
@@ -3360,12 +3876,14 @@ reordering_25341_head() {
 }
 reordering_25341_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25341.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25341.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25341.pkt
 }
 reordering_25341_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_25413 cleanup
 reordering_25413_head() {
     atf_set timeout 10
@@ -3373,12 +3891,14 @@ reordering_25413_head() {
 }
 reordering_25413_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25413.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25413.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25413.pkt
 }
 reordering_25413_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_25431 cleanup
 reordering_25431_head() {
     atf_set timeout 10
@@ -3386,12 +3906,14 @@ reordering_25431_head() {
 }
 reordering_25431_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25431.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25431.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-25431.pkt
 }
 reordering_25431_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_31245 cleanup
 reordering_31245_head() {
     atf_set timeout 10
@@ -3399,12 +3921,14 @@ reordering_31245_head() {
 }
 reordering_31245_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31245.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31245.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31245.pkt
 }
 reordering_31245_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_31254 cleanup
 reordering_31254_head() {
     atf_set timeout 10
@@ -3412,12 +3936,14 @@ reordering_31254_head() {
 }
 reordering_31254_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31254.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31254.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31254.pkt
 }
 reordering_31254_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_31425 cleanup
 reordering_31425_head() {
     atf_set timeout 10
@@ -3425,12 +3951,14 @@ reordering_31425_head() {
 }
 reordering_31425_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31425.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31425.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31425.pkt
 }
 reordering_31425_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_31452 cleanup
 reordering_31452_head() {
     atf_set timeout 10
@@ -3438,12 +3966,14 @@ reordering_31452_head() {
 }
 reordering_31452_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31452.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31452.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31452.pkt
 }
 reordering_31452_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_31524 cleanup
 reordering_31524_head() {
     atf_set timeout 10
@@ -3451,12 +3981,14 @@ reordering_31524_head() {
 }
 reordering_31524_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31524.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31524.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31524.pkt
 }
 reordering_31524_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_31542 cleanup
 reordering_31542_head() {
     atf_set timeout 10
@@ -3464,12 +3996,14 @@ reordering_31542_head() {
 }
 reordering_31542_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31542.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31542.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-31542.pkt
 }
 reordering_31542_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_32145 cleanup
 reordering_32145_head() {
     atf_set timeout 10
@@ -3477,12 +4011,14 @@ reordering_32145_head() {
 }
 reordering_32145_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32145.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32145.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32145.pkt
 }
 reordering_32145_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_32154 cleanup
 reordering_32154_head() {
     atf_set timeout 10
@@ -3490,12 +4026,14 @@ reordering_32154_head() {
 }
 reordering_32154_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32154.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32154.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32154.pkt
 }
 reordering_32154_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_32415 cleanup
 reordering_32415_head() {
     atf_set timeout 10
@@ -3503,12 +4041,14 @@ reordering_32415_head() {
 }
 reordering_32415_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32415.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32415.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32415.pkt
 }
 reordering_32415_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_32451 cleanup
 reordering_32451_head() {
     atf_set timeout 10
@@ -3516,12 +4056,14 @@ reordering_32451_head() {
 }
 reordering_32451_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32451.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32451.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32451.pkt
 }
 reordering_32451_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_32514 cleanup
 reordering_32514_head() {
     atf_set timeout 10
@@ -3529,12 +4071,14 @@ reordering_32514_head() {
 }
 reordering_32514_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32514.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32514.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32514.pkt
 }
 reordering_32514_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_32541 cleanup
 reordering_32541_head() {
     atf_set timeout 10
@@ -3542,12 +4086,14 @@ reordering_32541_head() {
 }
 reordering_32541_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32541.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32541.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-32541.pkt
 }
 reordering_32541_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_34125 cleanup
 reordering_34125_head() {
     atf_set timeout 10
@@ -3555,12 +4101,14 @@ reordering_34125_head() {
 }
 reordering_34125_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34125.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34125.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34125.pkt
 }
 reordering_34125_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_34152 cleanup
 reordering_34152_head() {
     atf_set timeout 10
@@ -3568,12 +4116,14 @@ reordering_34152_head() {
 }
 reordering_34152_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34152.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34152.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34152.pkt
 }
 reordering_34152_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_34215 cleanup
 reordering_34215_head() {
     atf_set timeout 10
@@ -3581,12 +4131,14 @@ reordering_34215_head() {
 }
 reordering_34215_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34215.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34215.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34215.pkt
 }
 reordering_34215_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_34251 cleanup
 reordering_34251_head() {
     atf_set timeout 10
@@ -3594,12 +4146,14 @@ reordering_34251_head() {
 }
 reordering_34251_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34251.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34251.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34251.pkt
 }
 reordering_34251_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_34512 cleanup
 reordering_34512_head() {
     atf_set timeout 10
@@ -3607,12 +4161,14 @@ reordering_34512_head() {
 }
 reordering_34512_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34512.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34512.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34512.pkt
 }
 reordering_34512_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_34521 cleanup
 reordering_34521_head() {
     atf_set timeout 10
@@ -3620,12 +4176,14 @@ reordering_34521_head() {
 }
 reordering_34521_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34521.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34521.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-34521.pkt
 }
 reordering_34521_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_35124 cleanup
 reordering_35124_head() {
     atf_set timeout 10
@@ -3633,12 +4191,14 @@ reordering_35124_head() {
 }
 reordering_35124_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35124.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35124.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35124.pkt
 }
 reordering_35124_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_35142 cleanup
 reordering_35142_head() {
     atf_set timeout 10
@@ -3646,12 +4206,14 @@ reordering_35142_head() {
 }
 reordering_35142_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35142.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35142.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35142.pkt
 }
 reordering_35142_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_35214 cleanup
 reordering_35214_head() {
     atf_set timeout 10
@@ -3659,12 +4221,14 @@ reordering_35214_head() {
 }
 reordering_35214_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35214.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35214.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35214.pkt
 }
 reordering_35214_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_35241 cleanup
 reordering_35241_head() {
     atf_set timeout 10
@@ -3672,12 +4236,14 @@ reordering_35241_head() {
 }
 reordering_35241_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35241.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35241.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35241.pkt
 }
 reordering_35241_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_35412 cleanup
 reordering_35412_head() {
     atf_set timeout 10
@@ -3685,12 +4251,14 @@ reordering_35412_head() {
 }
 reordering_35412_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35412.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35412.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35412.pkt
 }
 reordering_35412_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_35421 cleanup
 reordering_35421_head() {
     atf_set timeout 10
@@ -3698,12 +4266,14 @@ reordering_35421_head() {
 }
 reordering_35421_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35421.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35421.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-35421.pkt
 }
 reordering_35421_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_41235 cleanup
 reordering_41235_head() {
     atf_set timeout 10
@@ -3711,12 +4281,14 @@ reordering_41235_head() {
 }
 reordering_41235_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41235.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41235.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41235.pkt
 }
 reordering_41235_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_41253 cleanup
 reordering_41253_head() {
     atf_set timeout 10
@@ -3724,12 +4296,14 @@ reordering_41253_head() {
 }
 reordering_41253_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41253.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41253.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41253.pkt
 }
 reordering_41253_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_41325 cleanup
 reordering_41325_head() {
     atf_set timeout 10
@@ -3737,12 +4311,14 @@ reordering_41325_head() {
 }
 reordering_41325_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41325.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41325.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41325.pkt
 }
 reordering_41325_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_41352 cleanup
 reordering_41352_head() {
     atf_set timeout 10
@@ -3750,12 +4326,14 @@ reordering_41352_head() {
 }
 reordering_41352_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41352.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41352.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41352.pkt
 }
 reordering_41352_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_41523 cleanup
 reordering_41523_head() {
     atf_set timeout 10
@@ -3763,12 +4341,14 @@ reordering_41523_head() {
 }
 reordering_41523_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41523.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41523.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41523.pkt
 }
 reordering_41523_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_41532 cleanup
 reordering_41532_head() {
     atf_set timeout 10
@@ -3776,12 +4356,14 @@ reordering_41532_head() {
 }
 reordering_41532_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41532.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41532.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-41532.pkt
 }
 reordering_41532_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_42135 cleanup
 reordering_42135_head() {
     atf_set timeout 10
@@ -3789,12 +4371,14 @@ reordering_42135_head() {
 }
 reordering_42135_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42135.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42135.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42135.pkt
 }
 reordering_42135_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_42153 cleanup
 reordering_42153_head() {
     atf_set timeout 10
@@ -3802,12 +4386,14 @@ reordering_42153_head() {
 }
 reordering_42153_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42153.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42153.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42153.pkt
 }
 reordering_42153_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_42315 cleanup
 reordering_42315_head() {
     atf_set timeout 10
@@ -3815,12 +4401,14 @@ reordering_42315_head() {
 }
 reordering_42315_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42315.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42315.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42315.pkt
 }
 reordering_42315_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_42351 cleanup
 reordering_42351_head() {
     atf_set timeout 10
@@ -3828,12 +4416,14 @@ reordering_42351_head() {
 }
 reordering_42351_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42351.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42351.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42351.pkt
 }
 reordering_42351_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_42513 cleanup
 reordering_42513_head() {
     atf_set timeout 10
@@ -3841,12 +4431,14 @@ reordering_42513_head() {
 }
 reordering_42513_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42513.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42513.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42513.pkt
 }
 reordering_42513_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_42531 cleanup
 reordering_42531_head() {
     atf_set timeout 10
@@ -3854,12 +4446,14 @@ reordering_42531_head() {
 }
 reordering_42531_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42531.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42531.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-42531.pkt
 }
 reordering_42531_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_43125 cleanup
 reordering_43125_head() {
     atf_set timeout 10
@@ -3867,12 +4461,14 @@ reordering_43125_head() {
 }
 reordering_43125_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43125.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43125.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43125.pkt
 }
 reordering_43125_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_43152 cleanup
 reordering_43152_head() {
     atf_set timeout 10
@@ -3880,12 +4476,14 @@ reordering_43152_head() {
 }
 reordering_43152_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43152.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43152.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43152.pkt
 }
 reordering_43152_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_43215 cleanup
 reordering_43215_head() {
     atf_set timeout 10
@@ -3893,12 +4491,14 @@ reordering_43215_head() {
 }
 reordering_43215_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43215.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43215.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43215.pkt
 }
 reordering_43215_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_43251 cleanup
 reordering_43251_head() {
     atf_set timeout 10
@@ -3906,12 +4506,14 @@ reordering_43251_head() {
 }
 reordering_43251_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43251.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43251.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43251.pkt
 }
 reordering_43251_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_43512 cleanup
 reordering_43512_head() {
     atf_set timeout 10
@@ -3919,12 +4521,14 @@ reordering_43512_head() {
 }
 reordering_43512_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43512.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43512.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43512.pkt
 }
 reordering_43512_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_43521 cleanup
 reordering_43521_head() {
     atf_set timeout 10
@@ -3932,12 +4536,14 @@ reordering_43521_head() {
 }
 reordering_43521_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43521.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43521.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-43521.pkt
 }
 reordering_43521_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_45123 cleanup
 reordering_45123_head() {
     atf_set timeout 10
@@ -3945,12 +4551,14 @@ reordering_45123_head() {
 }
 reordering_45123_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45123.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45123.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45123.pkt
 }
 reordering_45123_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_45132 cleanup
 reordering_45132_head() {
     atf_set timeout 10
@@ -3958,12 +4566,14 @@ reordering_45132_head() {
 }
 reordering_45132_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45132.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45132.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45132.pkt
 }
 reordering_45132_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_45213 cleanup
 reordering_45213_head() {
     atf_set timeout 10
@@ -3971,12 +4581,14 @@ reordering_45213_head() {
 }
 reordering_45213_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45213.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45213.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45213.pkt
 }
 reordering_45213_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_45231 cleanup
 reordering_45231_head() {
     atf_set timeout 10
@@ -3984,12 +4596,14 @@ reordering_45231_head() {
 }
 reordering_45231_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45231.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45231.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45231.pkt
 }
 reordering_45231_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_45312 cleanup
 reordering_45312_head() {
     atf_set timeout 10
@@ -3997,12 +4611,14 @@ reordering_45312_head() {
 }
 reordering_45312_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45312.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45312.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45312.pkt
 }
 reordering_45312_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_45321 cleanup
 reordering_45321_head() {
     atf_set timeout 10
@@ -4010,12 +4626,14 @@ reordering_45321_head() {
 }
 reordering_45321_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45321.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45321.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-45321.pkt
 }
 reordering_45321_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_51234 cleanup
 reordering_51234_head() {
     atf_set timeout 10
@@ -4023,12 +4641,14 @@ reordering_51234_head() {
 }
 reordering_51234_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51234.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51234.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51234.pkt
 }
 reordering_51234_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_51243 cleanup
 reordering_51243_head() {
     atf_set timeout 10
@@ -4036,12 +4656,14 @@ reordering_51243_head() {
 }
 reordering_51243_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51243.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51243.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51243.pkt
 }
 reordering_51243_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_51324 cleanup
 reordering_51324_head() {
     atf_set timeout 10
@@ -4049,12 +4671,14 @@ reordering_51324_head() {
 }
 reordering_51324_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51324.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51324.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51324.pkt
 }
 reordering_51324_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_51342 cleanup
 reordering_51342_head() {
     atf_set timeout 10
@@ -4062,12 +4686,14 @@ reordering_51342_head() {
 }
 reordering_51342_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51342.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51342.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51342.pkt
 }
 reordering_51342_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_51423 cleanup
 reordering_51423_head() {
     atf_set timeout 10
@@ -4075,12 +4701,14 @@ reordering_51423_head() {
 }
 reordering_51423_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51423.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51423.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51423.pkt
 }
 reordering_51423_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_51432 cleanup
 reordering_51432_head() {
     atf_set timeout 10
@@ -4088,12 +4716,14 @@ reordering_51432_head() {
 }
 reordering_51432_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51432.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51432.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-51432.pkt
 }
 reordering_51432_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_52134 cleanup
 reordering_52134_head() {
     atf_set timeout 10
@@ -4101,12 +4731,14 @@ reordering_52134_head() {
 }
 reordering_52134_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52134.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52134.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52134.pkt
 }
 reordering_52134_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_52143 cleanup
 reordering_52143_head() {
     atf_set timeout 10
@@ -4114,12 +4746,14 @@ reordering_52143_head() {
 }
 reordering_52143_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52143.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52143.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52143.pkt
 }
 reordering_52143_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_52314 cleanup
 reordering_52314_head() {
     atf_set timeout 10
@@ -4127,12 +4761,14 @@ reordering_52314_head() {
 }
 reordering_52314_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52314.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52314.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52314.pkt
 }
 reordering_52314_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_52341 cleanup
 reordering_52341_head() {
     atf_set timeout 10
@@ -4140,12 +4776,14 @@ reordering_52341_head() {
 }
 reordering_52341_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52341.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52341.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52341.pkt
 }
 reordering_52341_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_52413 cleanup
 reordering_52413_head() {
     atf_set timeout 10
@@ -4153,12 +4791,14 @@ reordering_52413_head() {
 }
 reordering_52413_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52413.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52413.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52413.pkt
 }
 reordering_52413_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_52431 cleanup
 reordering_52431_head() {
     atf_set timeout 10
@@ -4166,12 +4806,14 @@ reordering_52431_head() {
 }
 reordering_52431_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52431.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52431.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-52431.pkt
 }
 reordering_52431_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_53124 cleanup
 reordering_53124_head() {
     atf_set timeout 10
@@ -4179,12 +4821,14 @@ reordering_53124_head() {
 }
 reordering_53124_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53124.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53124.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53124.pkt
 }
 reordering_53124_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_53142 cleanup
 reordering_53142_head() {
     atf_set timeout 10
@@ -4192,12 +4836,14 @@ reordering_53142_head() {
 }
 reordering_53142_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53142.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53142.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53142.pkt
 }
 reordering_53142_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_53214 cleanup
 reordering_53214_head() {
     atf_set timeout 10
@@ -4205,12 +4851,14 @@ reordering_53214_head() {
 }
 reordering_53214_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53214.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53214.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53214.pkt
 }
 reordering_53214_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_53241 cleanup
 reordering_53241_head() {
     atf_set timeout 10
@@ -4218,12 +4866,14 @@ reordering_53241_head() {
 }
 reordering_53241_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53241.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53241.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53241.pkt
 }
 reordering_53241_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_53412 cleanup
 reordering_53412_head() {
     atf_set timeout 10
@@ -4231,12 +4881,14 @@ reordering_53412_head() {
 }
 reordering_53412_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53412.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53412.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53412.pkt
 }
 reordering_53412_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_53421 cleanup
 reordering_53421_head() {
     atf_set timeout 10
@@ -4244,12 +4896,14 @@ reordering_53421_head() {
 }
 reordering_53421_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53421.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53421.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-53421.pkt
 }
 reordering_53421_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_54123 cleanup
 reordering_54123_head() {
     atf_set timeout 10
@@ -4257,12 +4911,14 @@ reordering_54123_head() {
 }
 reordering_54123_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54123.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54123.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54123.pkt
 }
 reordering_54123_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_54132 cleanup
 reordering_54132_head() {
     atf_set timeout 10
@@ -4270,12 +4926,14 @@ reordering_54132_head() {
 }
 reordering_54132_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54132.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54132.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54132.pkt
 }
 reordering_54132_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_54213 cleanup
 reordering_54213_head() {
     atf_set timeout 10
@@ -4283,12 +4941,14 @@ reordering_54213_head() {
 }
 reordering_54213_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54213.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54213.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54213.pkt
 }
 reordering_54213_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_54231 cleanup
 reordering_54231_head() {
     atf_set timeout 10
@@ -4296,12 +4956,14 @@ reordering_54231_head() {
 }
 reordering_54231_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54231.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54231.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54231.pkt
 }
 reordering_54231_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_54312 cleanup
 reordering_54312_head() {
     atf_set timeout 10
@@ -4309,12 +4971,14 @@ reordering_54312_head() {
 }
 reordering_54312_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54312.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54312.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54312.pkt
 }
 reordering_54312_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_54321 cleanup
 reordering_54321_head() {
     atf_set timeout 10
@@ -4322,12 +4986,14 @@ reordering_54321_head() {
 }
 reordering_54321_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54321.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54321.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-54321.pkt
 }
 reordering_54321_cleanup() {
     restore_sysctls
 }
+
 atf_test_case reordering_5F4321 cleanup
 reordering_5F4321_head() {
     atf_set timeout 10
@@ -4335,12 +5001,14 @@ reordering_5F4321_head() {
 }
 reordering_5F4321_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-data-segments/reordering-5F4321.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-5F4321.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-data-segments/reordering-5F4321.pkt
 }
 reordering_5F4321_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_comm_prohibited_ipv4 cleanup
 rcv_icmp_hard_error_comm_prohibited_ipv4_head() {
     atf_set timeout 10
@@ -4348,12 +5016,14 @@ rcv_icmp_hard_error_comm_prohibited_ipv4_head() {
 }
 rcv_icmp_hard_error_comm_prohibited_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-comm-prohibited-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-comm-prohibited-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-comm-prohibited-ipv4.pkt
 }
 rcv_icmp_hard_error_comm_prohibited_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_comm_prohibited_ipv6 cleanup
 rcv_icmp_hard_error_comm_prohibited_ipv6_head() {
     atf_set timeout 10
@@ -4361,12 +5031,14 @@ rcv_icmp_hard_error_comm_prohibited_ipv6_head() {
 }
 rcv_icmp_hard_error_comm_prohibited_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-comm-prohibited-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-comm-prohibited-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-comm-prohibited-ipv6.pkt
 }
 rcv_icmp_hard_error_comm_prohibited_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_host_prohibited_ipv4 cleanup
 rcv_icmp_hard_error_host_prohibited_ipv4_head() {
     atf_set timeout 10
@@ -4374,12 +5046,14 @@ rcv_icmp_hard_error_host_prohibited_ipv4_head() {
 }
 rcv_icmp_hard_error_host_prohibited_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-host-prohibited-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-host-prohibited-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-host-prohibited-ipv4.pkt
 }
 rcv_icmp_hard_error_host_prohibited_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_ignored_ipv4 cleanup
 rcv_icmp_hard_error_ignored_ipv4_head() {
     atf_set timeout 10
@@ -4387,12 +5061,14 @@ rcv_icmp_hard_error_ignored_ipv4_head() {
 }
 rcv_icmp_hard_error_ignored_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ignored-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ignored-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ignored-ipv4.pkt
 }
 rcv_icmp_hard_error_ignored_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_ignored_ipv6 cleanup
 rcv_icmp_hard_error_ignored_ipv6_head() {
     atf_set timeout 10
@@ -4400,12 +5076,14 @@ rcv_icmp_hard_error_ignored_ipv6_head() {
 }
 rcv_icmp_hard_error_ignored_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ignored-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ignored-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ignored-ipv6.pkt
 }
 rcv_icmp_hard_error_ignored_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_net_prohibited_ipv4 cleanup
 rcv_icmp_hard_error_net_prohibited_ipv4_head() {
     atf_set timeout 10
@@ -4413,12 +5091,14 @@ rcv_icmp_hard_error_net_prohibited_ipv4_head() {
 }
 rcv_icmp_hard_error_net_prohibited_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-net-prohibited-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-net-prohibited-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-net-prohibited-ipv4.pkt
 }
 rcv_icmp_hard_error_net_prohibited_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_port_unreachable_ipv4 cleanup
 rcv_icmp_hard_error_port_unreachable_ipv4_head() {
     atf_set timeout 10
@@ -4426,12 +5106,14 @@ rcv_icmp_hard_error_port_unreachable_ipv4_head() {
 }
 rcv_icmp_hard_error_port_unreachable_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-port-unreachable-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-port-unreachable-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-port-unreachable-ipv4.pkt
 }
 rcv_icmp_hard_error_port_unreachable_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_port_unreachable_ipv6 cleanup
 rcv_icmp_hard_error_port_unreachable_ipv6_head() {
     atf_set timeout 10
@@ -4439,12 +5121,14 @@ rcv_icmp_hard_error_port_unreachable_ipv6_head() {
 }
 rcv_icmp_hard_error_port_unreachable_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-port-unreachable-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-port-unreachable-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-port-unreachable-ipv6.pkt
 }
 rcv_icmp_hard_error_port_unreachable_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_proto_unreachable_ipv4 cleanup
 rcv_icmp_hard_error_proto_unreachable_ipv4_head() {
     atf_set timeout 10
@@ -4452,12 +5136,14 @@ rcv_icmp_hard_error_proto_unreachable_ipv4_head() {
 }
 rcv_icmp_hard_error_proto_unreachable_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-proto-unreachable-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-proto-unreachable-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-proto-unreachable-ipv4.pkt
 }
 rcv_icmp_hard_error_proto_unreachable_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_proto_unreachable_ipv6 cleanup
 rcv_icmp_hard_error_proto_unreachable_ipv6_head() {
     atf_set timeout 10
@@ -4465,12 +5151,14 @@ rcv_icmp_hard_error_proto_unreachable_ipv6_head() {
 }
 rcv_icmp_hard_error_proto_unreachable_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-proto-unreachable-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-proto-unreachable-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-proto-unreachable-ipv6.pkt
 }
 rcv_icmp_hard_error_proto_unreachable_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_ttl_exceeded_ipv4 cleanup
 rcv_icmp_hard_error_ttl_exceeded_ipv4_head() {
     atf_set timeout 10
@@ -4478,12 +5166,14 @@ rcv_icmp_hard_error_ttl_exceeded_ipv4_head() {
 }
 rcv_icmp_hard_error_ttl_exceeded_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ttl-exceeded-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ttl-exceeded-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ttl-exceeded-ipv4.pkt
 }
 rcv_icmp_hard_error_ttl_exceeded_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_icmp_hard_error_ttl_exceeded_ipv6 cleanup
 rcv_icmp_hard_error_ttl_exceeded_ipv6_head() {
     atf_set timeout 10
@@ -4491,12 +5181,14 @@ rcv_icmp_hard_error_ttl_exceeded_ipv6_head() {
 }
 rcv_icmp_hard_error_ttl_exceeded_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ttl-exceeded-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ttl-exceeded-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/rcv-icmp/rcv-icmp-hard-error-ttl-exceeded-ipv6.pkt
 }
 rcv_icmp_hard_error_ttl_exceeded_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_mss_inherited_from_mtu_1280_ipv6 cleanup
 snd_syn_mss_inherited_from_mtu_1280_ipv6_head() {
     atf_set timeout 450
@@ -4504,12 +5196,14 @@ snd_syn_mss_inherited_from_mtu_1280_ipv6_head() {
 }
 snd_syn_mss_inherited_from_mtu_1280_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-1280-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-1280-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-1280-ipv6.pkt
 }
 snd_syn_mss_inherited_from_mtu_1280_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_mss_inherited_from_mtu_65535_ipv4 cleanup
 snd_syn_mss_inherited_from_mtu_65535_ipv4_head() {
     atf_set timeout 450
@@ -4517,12 +5211,14 @@ snd_syn_mss_inherited_from_mtu_65535_ipv4_head() {
 }
 snd_syn_mss_inherited_from_mtu_65535_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-65535-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-65535-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-65535-ipv4.pkt
 }
 snd_syn_mss_inherited_from_mtu_65535_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_mss_inherited_from_mtu_65535_ipv6 cleanup
 snd_syn_mss_inherited_from_mtu_65535_ipv6_head() {
     atf_set timeout 450
@@ -4530,12 +5226,14 @@ snd_syn_mss_inherited_from_mtu_65535_ipv6_head() {
 }
 snd_syn_mss_inherited_from_mtu_65535_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-65535-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-65535-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-65535-ipv6.pkt
 }
 snd_syn_mss_inherited_from_mtu_65535_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_mss_inherited_from_mtu_72_ipv4 cleanup
 snd_syn_mss_inherited_from_mtu_72_ipv4_head() {
     atf_set timeout 450
@@ -4543,12 +5241,14 @@ snd_syn_mss_inherited_from_mtu_72_ipv4_head() {
 }
 snd_syn_mss_inherited_from_mtu_72_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-72-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-72-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-72-ipv4.pkt
 }
 snd_syn_mss_inherited_from_mtu_72_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_mss_inherited_from_mtu_9000_ipv4 cleanup
 snd_syn_mss_inherited_from_mtu_9000_ipv4_head() {
     atf_set timeout 450
@@ -4556,12 +5256,14 @@ snd_syn_mss_inherited_from_mtu_9000_ipv4_head() {
 }
 snd_syn_mss_inherited_from_mtu_9000_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-9000-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-9000-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-9000-ipv4.pkt
 }
 snd_syn_mss_inherited_from_mtu_9000_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_mss_inherited_from_mtu_9000_ipv6 cleanup
 snd_syn_mss_inherited_from_mtu_9000_ipv6_head() {
     atf_set timeout 450
@@ -4569,12 +5271,14 @@ snd_syn_mss_inherited_from_mtu_9000_ipv6_head() {
 }
 snd_syn_mss_inherited_from_mtu_9000_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-9000-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-9000-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-mss-inherited-from-mtu-9000-ipv6.pkt
 }
 snd_syn_mss_inherited_from_mtu_9000_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_rtx_drop_options_ipv4 cleanup
 snd_syn_rtx_drop_options_ipv4_head() {
     atf_set timeout 450
@@ -4582,12 +5286,14 @@ snd_syn_rtx_drop_options_ipv4_head() {
 }
 snd_syn_rtx_drop_options_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-drop-options-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-drop-options-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-drop-options-ipv4.pkt
 }
 snd_syn_rtx_drop_options_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_rtx_drop_options_ipv6 cleanup
 snd_syn_rtx_drop_options_ipv6_head() {
     atf_set timeout 450
@@ -4595,12 +5301,14 @@ snd_syn_rtx_drop_options_ipv6_head() {
 }
 snd_syn_rtx_drop_options_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-drop-options-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-drop-options-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-drop-options-ipv6.pkt
 }
 snd_syn_rtx_drop_options_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_rtx_keepinit_ipv4 cleanup
 snd_syn_rtx_keepinit_ipv4_head() {
     atf_set timeout 450
@@ -4608,12 +5316,14 @@ snd_syn_rtx_keepinit_ipv4_head() {
 }
 snd_syn_rtx_keepinit_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-keepinit-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-keepinit-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-keepinit-ipv4.pkt
 }
 snd_syn_rtx_keepinit_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_rtx_keepinit_ipv6 cleanup
 snd_syn_rtx_keepinit_ipv6_head() {
     atf_set timeout 450
@@ -4621,12 +5331,14 @@ snd_syn_rtx_keepinit_ipv6_head() {
 }
 snd_syn_rtx_keepinit_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-keepinit-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-keepinit-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-keepinit-ipv6.pkt
 }
 snd_syn_rtx_keepinit_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_rtx_max_number_ipv4 cleanup
 snd_syn_rtx_max_number_ipv4_head() {
     atf_set timeout 450
@@ -4634,12 +5346,14 @@ snd_syn_rtx_max_number_ipv4_head() {
 }
 snd_syn_rtx_max_number_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-max-number-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-max-number-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-max-number-ipv4.pkt
 }
 snd_syn_rtx_max_number_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_rtx_max_number_ipv6 cleanup
 snd_syn_rtx_max_number_ipv6_head() {
     atf_set timeout 450
@@ -4647,12 +5361,14 @@ snd_syn_rtx_max_number_ipv6_head() {
 }
 snd_syn_rtx_max_number_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-max-number-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-max-number-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-rtx-max-number-ipv6.pkt
 }
 snd_syn_rtx_max_number_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_default_options_ipv4 cleanup
 snd_syn_with_default_options_ipv4_head() {
     atf_set timeout 450
@@ -4660,12 +5376,14 @@ snd_syn_with_default_options_ipv4_head() {
 }
 snd_syn_with_default_options_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-default-options-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-default-options-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-default-options-ipv4.pkt
 }
 snd_syn_with_default_options_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_default_options_ipv6 cleanup
 snd_syn_with_default_options_ipv6_head() {
     atf_set timeout 450
@@ -4673,12 +5391,14 @@ snd_syn_with_default_options_ipv6_head() {
 }
 snd_syn_with_default_options_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-default-options-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-default-options-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-default-options-ipv6.pkt
 }
 snd_syn_with_default_options_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_ecn_alt_maxretries_ipv4 cleanup
 snd_syn_with_ecn_alt_maxretries_ipv4_head() {
     atf_set timeout 450
@@ -4686,12 +5406,14 @@ snd_syn_with_ecn_alt_maxretries_ipv4_head() {
 }
 snd_syn_with_ecn_alt_maxretries_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-alt-maxretries-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-alt-maxretries-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-alt-maxretries-ipv4.pkt
 }
 snd_syn_with_ecn_alt_maxretries_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_ecn_alt_maxretries_ipv6 cleanup
 snd_syn_with_ecn_alt_maxretries_ipv6_head() {
     atf_set timeout 450
@@ -4699,12 +5421,14 @@ snd_syn_with_ecn_alt_maxretries_ipv6_head() {
 }
 snd_syn_with_ecn_alt_maxretries_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-alt-maxretries-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-alt-maxretries-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-alt-maxretries-ipv6.pkt
 }
 snd_syn_with_ecn_alt_maxretries_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_ecn_ipv4 cleanup
 snd_syn_with_ecn_ipv4_head() {
     atf_set timeout 450
@@ -4712,12 +5436,14 @@ snd_syn_with_ecn_ipv4_head() {
 }
 snd_syn_with_ecn_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-ipv4.pkt
 }
 snd_syn_with_ecn_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_ecn_ipv6 cleanup
 snd_syn_with_ecn_ipv6_head() {
     atf_set timeout 450
@@ -4725,12 +5451,14 @@ snd_syn_with_ecn_ipv6_head() {
 }
 snd_syn_with_ecn_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-ecn-ipv6.pkt
 }
 snd_syn_with_ecn_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_max_ws_ipv4 cleanup
 snd_syn_with_max_ws_ipv4_head() {
     atf_set timeout 450
@@ -4738,12 +5466,14 @@ snd_syn_with_max_ws_ipv4_head() {
 }
 snd_syn_with_max_ws_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-max-ws-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-max-ws-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-max-ws-ipv4.pkt
 }
 snd_syn_with_max_ws_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_max_ws_ipv6 cleanup
 snd_syn_with_max_ws_ipv6_head() {
     atf_set timeout 450
@@ -4751,12 +5481,14 @@ snd_syn_with_max_ws_ipv6_head() {
 }
 snd_syn_with_max_ws_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-max-ws-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-max-ws-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-max-ws-ipv6.pkt
 }
 snd_syn_with_max_ws_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_min_ws_ipv4 cleanup
 snd_syn_with_min_ws_ipv4_head() {
     atf_set timeout 450
@@ -4764,12 +5496,14 @@ snd_syn_with_min_ws_ipv4_head() {
 }
 snd_syn_with_min_ws_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-min-ws-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-min-ws-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-min-ws-ipv4.pkt
 }
 snd_syn_with_min_ws_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_with_min_ws_ipv6 cleanup
 snd_syn_with_min_ws_ipv6_head() {
     atf_set timeout 450
@@ -4777,12 +5511,14 @@ snd_syn_with_min_ws_ipv6_head() {
 }
 snd_syn_with_min_ws_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-min-ws-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-min-ws-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-with-min-ws-ipv6.pkt
 }
 snd_syn_with_min_ws_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_options_ipv4 cleanup
 snd_syn_without_options_ipv4_head() {
     atf_set timeout 450
@@ -4790,12 +5526,14 @@ snd_syn_without_options_ipv4_head() {
 }
 snd_syn_without_options_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-options-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-options-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-options-ipv4.pkt
 }
 snd_syn_without_options_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_options_ipv6 cleanup
 snd_syn_without_options_ipv6_head() {
     atf_set timeout 450
@@ -4803,12 +5541,14 @@ snd_syn_without_options_ipv6_head() {
 }
 snd_syn_without_options_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-options-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-options-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-options-ipv6.pkt
 }
 snd_syn_without_options_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_sack_and_ws_and_ts_ipv4 cleanup
 snd_syn_without_sack_and_ws_and_ts_ipv4_head() {
     atf_set timeout 450
@@ -4816,12 +5556,14 @@ snd_syn_without_sack_and_ws_and_ts_ipv4_head() {
 }
 snd_syn_without_sack_and_ws_and_ts_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-and-ws-and-ts-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-and-ws-and-ts-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-and-ws-and-ts-ipv4.pkt
 }
 snd_syn_without_sack_and_ws_and_ts_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_sack_and_ws_and_ts_ipv6 cleanup
 snd_syn_without_sack_and_ws_and_ts_ipv6_head() {
     atf_set timeout 450
@@ -4829,12 +5571,14 @@ snd_syn_without_sack_and_ws_and_ts_ipv6_head() {
 }
 snd_syn_without_sack_and_ws_and_ts_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-and-ws-and-ts-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-and-ws-and-ts-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-and-ws-and-ts-ipv6.pkt
 }
 snd_syn_without_sack_and_ws_and_ts_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_sack_ipv4 cleanup
 snd_syn_without_sack_ipv4_head() {
     atf_set timeout 450
@@ -4842,12 +5586,14 @@ snd_syn_without_sack_ipv4_head() {
 }
 snd_syn_without_sack_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-ipv4.pkt
 }
 snd_syn_without_sack_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_sack_ipv6 cleanup
 snd_syn_without_sack_ipv6_head() {
     atf_set timeout 450
@@ -4855,12 +5601,14 @@ snd_syn_without_sack_ipv6_head() {
 }
 snd_syn_without_sack_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-sack-ipv6.pkt
 }
 snd_syn_without_sack_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_ws_and_ts_ipv4 cleanup
 snd_syn_without_ws_and_ts_ipv4_head() {
     atf_set timeout 450
@@ -4868,12 +5616,14 @@ snd_syn_without_ws_and_ts_ipv4_head() {
 }
 snd_syn_without_ws_and_ts_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-ws-and-ts-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-ws-and-ts-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-ws-and-ts-ipv4.pkt
 }
 snd_syn_without_ws_and_ts_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case snd_syn_without_ws_and_ts_ipv6 cleanup
 snd_syn_without_ws_and_ts_ipv6_head() {
     atf_set timeout 450
@@ -4881,12 +5631,14 @@ snd_syn_without_ws_and_ts_ipv6_head() {
 }
 snd_syn_without_ws_and_ts_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-ws-and-ts-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-ws-and-ts-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snd-syn/snd-syn-without-ws-and-ts-ipv6.pkt
 }
 snd_syn_without_ws_and_ts_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case close_wait_ipv4 cleanup
 close_wait_ipv4_head() {
     atf_set timeout 10
@@ -4894,12 +5646,14 @@ close_wait_ipv4_head() {
 }
 close_wait_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/close-wait-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/close-wait-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/close-wait-ipv4.pkt
 }
 close_wait_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case close_wait_ipv6 cleanup
 close_wait_ipv6_head() {
     atf_set timeout 10
@@ -4907,12 +5661,14 @@ close_wait_ipv6_head() {
 }
 close_wait_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/close-wait-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/close-wait-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/close-wait-ipv6.pkt
 }
 close_wait_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case closed_initially_ipv4 cleanup
 closed_initially_ipv4_head() {
     atf_set timeout 10
@@ -4920,12 +5676,14 @@ closed_initially_ipv4_head() {
 }
 closed_initially_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/closed-initially-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/closed-initially-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/closed-initially-ipv4.pkt
 }
 closed_initially_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case closed_initially_ipv6 cleanup
 closed_initially_ipv6_head() {
     atf_set timeout 10
@@ -4933,12 +5691,14 @@ closed_initially_ipv6_head() {
 }
 closed_initially_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/closed-initially-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/closed-initially-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/closed-initially-ipv6.pkt
 }
 closed_initially_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case closed_via_last_ack_ipv4 cleanup
 closed_via_last_ack_ipv4_head() {
     atf_set timeout 10
@@ -4946,12 +5706,14 @@ closed_via_last_ack_ipv4_head() {
 }
 closed_via_last_ack_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/closed-via-last-ack-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/closed-via-last-ack-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/closed-via-last-ack-ipv4.pkt
 }
 closed_via_last_ack_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case closed_via_last_ack_ipv6 cleanup
 closed_via_last_ack_ipv6_head() {
     atf_set timeout 10
@@ -4959,12 +5721,14 @@ closed_via_last_ack_ipv6_head() {
 }
 closed_via_last_ack_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/closed-via-last-ack-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/closed-via-last-ack-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/closed-via-last-ack-ipv6.pkt
 }
 closed_via_last_ack_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case closing_ipv4 cleanup
 closing_ipv4_head() {
     atf_set timeout 10
@@ -4972,12 +5736,14 @@ closing_ipv4_head() {
 }
 closing_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/closing-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/closing-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/closing-ipv4.pkt
 }
 closing_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case closing_ipv6 cleanup
 closing_ipv6_head() {
     atf_set timeout 10
@@ -4985,12 +5751,14 @@ closing_ipv6_head() {
 }
 closing_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/closing-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/closing-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/closing-ipv6.pkt
 }
 closing_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case established_ipv4 cleanup
 established_ipv4_head() {
     atf_set timeout 10
@@ -4998,12 +5766,14 @@ established_ipv4_head() {
 }
 established_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/established-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/established-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/established-ipv4.pkt
 }
 established_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case established_ipv6 cleanup
 established_ipv6_head() {
     atf_set timeout 10
@@ -5011,12 +5781,14 @@ established_ipv6_head() {
 }
 established_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/established-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/established-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/established-ipv6.pkt
 }
 established_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case fin_wait_1_ipv4 cleanup
 fin_wait_1_ipv4_head() {
     atf_set timeout 10
@@ -5024,12 +5796,14 @@ fin_wait_1_ipv4_head() {
 }
 fin_wait_1_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/fin-wait-1-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/fin-wait-1-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/fin-wait-1-ipv4.pkt
 }
 fin_wait_1_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case fin_wait_1_ipv6 cleanup
 fin_wait_1_ipv6_head() {
     atf_set timeout 10
@@ -5037,12 +5811,14 @@ fin_wait_1_ipv6_head() {
 }
 fin_wait_1_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/fin-wait-1-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/fin-wait-1-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/fin-wait-1-ipv6.pkt
 }
 fin_wait_1_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case fin_wait_2_ipv4 cleanup
 fin_wait_2_ipv4_head() {
     atf_set timeout 10
@@ -5050,12 +5826,14 @@ fin_wait_2_ipv4_head() {
 }
 fin_wait_2_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/fin-wait-2-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/fin-wait-2-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/fin-wait-2-ipv4.pkt
 }
 fin_wait_2_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case fin_wait_2_ipv6 cleanup
 fin_wait_2_ipv6_head() {
     atf_set timeout 10
@@ -5063,12 +5841,14 @@ fin_wait_2_ipv6_head() {
 }
 fin_wait_2_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/fin-wait-2-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/fin-wait-2-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/fin-wait-2-ipv6.pkt
 }
 fin_wait_2_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case last_ack_ipv4 cleanup
 last_ack_ipv4_head() {
     atf_set timeout 10
@@ -5076,12 +5856,14 @@ last_ack_ipv4_head() {
 }
 last_ack_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/last-ack-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/last-ack-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/last-ack-ipv4.pkt
 }
 last_ack_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case last_ack_ipv6 cleanup
 last_ack_ipv6_head() {
     atf_set timeout 10
@@ -5089,12 +5871,14 @@ last_ack_ipv6_head() {
 }
 last_ack_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/last-ack-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/last-ack-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/last-ack-ipv6.pkt
 }
 last_ack_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case listen_ipv4 cleanup
 listen_ipv4_head() {
     atf_set timeout 10
@@ -5102,12 +5886,14 @@ listen_ipv4_head() {
 }
 listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/listen-ipv4.pkt
 }
 listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case listen_ipv6 cleanup
 listen_ipv6_head() {
     atf_set timeout 10
@@ -5115,12 +5901,14 @@ listen_ipv6_head() {
 }
 listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/listen-ipv6.pkt
 }
 listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case noopt_parallel_syn_w_options_ipv4 cleanup
 noopt_parallel_syn_w_options_ipv4_head() {
     atf_set timeout 10
@@ -5128,12 +5916,14 @@ noopt_parallel_syn_w_options_ipv4_head() {
 }
 noopt_parallel_syn_w_options_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/noopt-parallel-syn-w-options-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/noopt-parallel-syn-w-options-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/noopt-parallel-syn-w-options-ipv4.pkt
 }
 noopt_parallel_syn_w_options_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case noopt_strict_tsopt cleanup
 noopt_strict_tsopt_head() {
     atf_set timeout 10
@@ -5141,12 +5931,14 @@ noopt_strict_tsopt_head() {
 }
 noopt_strict_tsopt_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/noopt-strict-tsopt.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/noopt-strict-tsopt.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/noopt-strict-tsopt.pkt
 }
 noopt_strict_tsopt_cleanup() {
     restore_sysctls
 }
+
 atf_test_case noopt_syn_rcvd_via_syn_sent_ipv4 cleanup
 noopt_syn_rcvd_via_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -5154,12 +5946,14 @@ noopt_syn_rcvd_via_syn_sent_ipv4_head() {
 }
 noopt_syn_rcvd_via_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/noopt-syn-rcvd-via-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/noopt-syn-rcvd-via-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/noopt-syn-rcvd-via-syn-sent-ipv4.pkt
 }
 noopt_syn_rcvd_via_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_listen_ipv4 cleanup
 syn_rcvd_via_listen_ipv4_head() {
     atf_set timeout 10
@@ -5167,12 +5961,14 @@ syn_rcvd_via_listen_ipv4_head() {
 }
 syn_rcvd_via_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-listen-ipv4.pkt
 }
 syn_rcvd_via_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_listen_ipv6 cleanup
 syn_rcvd_via_listen_ipv6_head() {
     atf_set timeout 10
@@ -5180,12 +5976,14 @@ syn_rcvd_via_listen_ipv6_head() {
 }
 syn_rcvd_via_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-listen-ipv6.pkt
 }
 syn_rcvd_via_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_syn_sent_ipv4_ecn01 cleanup
 syn_rcvd_via_syn_sent_ipv4_ecn01_head() {
     atf_set timeout 10
@@ -5193,12 +5991,14 @@ syn_rcvd_via_syn_sent_ipv4_ecn01_head() {
 }
 syn_rcvd_via_syn_sent_ipv4_ecn01_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn01.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn01.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn01.pkt
 }
 syn_rcvd_via_syn_sent_ipv4_ecn01_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_syn_sent_ipv4_ecn10 cleanup
 syn_rcvd_via_syn_sent_ipv4_ecn10_head() {
     atf_set timeout 10
@@ -5206,12 +6006,14 @@ syn_rcvd_via_syn_sent_ipv4_ecn10_head() {
 }
 syn_rcvd_via_syn_sent_ipv4_ecn10_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn10.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn10.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn10.pkt
 }
 syn_rcvd_via_syn_sent_ipv4_ecn10_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_syn_sent_ipv4_ecn11 cleanup
 syn_rcvd_via_syn_sent_ipv4_ecn11_head() {
     atf_set timeout 10
@@ -5219,12 +6021,14 @@ syn_rcvd_via_syn_sent_ipv4_ecn11_head() {
 }
 syn_rcvd_via_syn_sent_ipv4_ecn11_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn11.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn11.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4-ecn11.pkt
 }
 syn_rcvd_via_syn_sent_ipv4_ecn11_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_syn_sent_ipv4 cleanup
 syn_rcvd_via_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -5232,12 +6036,14 @@ syn_rcvd_via_syn_sent_ipv4_head() {
 }
 syn_rcvd_via_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv4.pkt
 }
 syn_rcvd_via_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_rcvd_via_syn_sent_ipv6 cleanup
 syn_rcvd_via_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -5245,12 +6051,14 @@ syn_rcvd_via_syn_sent_ipv6_head() {
 }
 syn_rcvd_via_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-rcvd-via-syn-sent-ipv6.pkt
 }
 syn_rcvd_via_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_sent_ipv4 cleanup
 syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -5258,12 +6066,14 @@ syn_sent_ipv4_head() {
 }
 syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-sent-ipv4.pkt
 }
 syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case syn_sent_ipv6 cleanup
 syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -5271,12 +6081,14 @@ syn_sent_ipv6_head() {
 }
 syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/syn-sent-ipv6.pkt
 }
 syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case time_wait_via_closing_ipv4 cleanup
 time_wait_via_closing_ipv4_head() {
     atf_set timeout 10
@@ -5284,12 +6096,14 @@ time_wait_via_closing_ipv4_head() {
 }
 time_wait_via_closing_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/time-wait-via-closing-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/time-wait-via-closing-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/time-wait-via-closing-ipv4.pkt
 }
 time_wait_via_closing_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case time_wait_via_closing_ipv6 cleanup
 time_wait_via_closing_ipv6_head() {
     atf_set timeout 10
@@ -5297,12 +6111,14 @@ time_wait_via_closing_ipv6_head() {
 }
 time_wait_via_closing_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/time-wait-via-closing-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/time-wait-via-closing-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/time-wait-via-closing-ipv6.pkt
 }
 time_wait_via_closing_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case time_wait_via_fin_wait_1_ipv4 cleanup
 time_wait_via_fin_wait_1_ipv4_head() {
     atf_set timeout 10
@@ -5310,12 +6126,14 @@ time_wait_via_fin_wait_1_ipv4_head() {
 }
 time_wait_via_fin_wait_1_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-1-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-1-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-1-ipv4.pkt
 }
 time_wait_via_fin_wait_1_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case time_wait_via_fin_wait_1_ipv6 cleanup
 time_wait_via_fin_wait_1_ipv6_head() {
     atf_set timeout 10
@@ -5323,12 +6141,14 @@ time_wait_via_fin_wait_1_ipv6_head() {
 }
 time_wait_via_fin_wait_1_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-1-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-1-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-1-ipv6.pkt
 }
 time_wait_via_fin_wait_1_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case time_wait_via_fin_wait_2_ipv4 cleanup
 time_wait_via_fin_wait_2_ipv4_head() {
     atf_set timeout 10
@@ -5336,12 +6156,14 @@ time_wait_via_fin_wait_2_ipv4_head() {
 }
 time_wait_via_fin_wait_2_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-2-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-2-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-2-ipv4.pkt
 }
 time_wait_via_fin_wait_2_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case time_wait_via_fin_wait_2_ipv6 cleanup
 time_wait_via_fin_wait_2_ipv6_head() {
     atf_set timeout 10
@@ -5349,12 +6171,14 @@ time_wait_via_fin_wait_2_ipv6_head() {
 }
 time_wait_via_fin_wait_2_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-2-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-2-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/snippets/time-wait-via-fin-wait-2-ipv6.pkt
 }
 time_wait_via_fin_wait_2_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv4 cleanup
 socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv4_head() {
     atf_set timeout 10
@@ -5362,12 +6186,14 @@ socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv4_head() {
 }
 socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepcnt-inherited-from-sysctl-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepcnt-inherited-from-sysctl-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepcnt-inherited-from-sysctl-ipv4.pkt
 }
 socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv6 cleanup
 socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv6_head() {
     atf_set timeout 10
@@ -5375,12 +6201,14 @@ socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv6_head() {
 }
 socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepcnt-inherited-from-sysctl-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepcnt-inherited-from-sysctl-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepcnt-inherited-from-sysctl-ipv6.pkt
 }
 socket_api_getsockopt_keepcnt_inherited_from_sysctl_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv4 cleanup
 socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv4_head() {
     atf_set timeout 10
@@ -5388,12 +6216,14 @@ socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv4_head() {
 }
 socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepidle-inherited-from-sysctl-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepidle-inherited-from-sysctl-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepidle-inherited-from-sysctl-ipv4.pkt
 }
 socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv6 cleanup
 socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv6_head() {
     atf_set timeout 10
@@ -5401,12 +6231,14 @@ socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv6_head() {
 }
 socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepidle-inherited-from-sysctl-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepidle-inherited-from-sysctl-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepidle-inherited-from-sysctl-ipv6.pkt
 }
 socket_api_getsockopt_keepidle_inherited_from_sysctl_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv4 cleanup
 socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv4_head() {
     atf_set timeout 10
@@ -5414,12 +6246,14 @@ socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv4_head() {
 }
 socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepinit-inherited-from-sysctl-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepinit-inherited-from-sysctl-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepinit-inherited-from-sysctl-ipv4.pkt
 }
 socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv6 cleanup
 socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv6_head() {
     atf_set timeout 10
@@ -5427,12 +6261,14 @@ socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv6_head() {
 }
 socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepinit-inherited-from-sysctl-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepinit-inherited-from-sysctl-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepinit-inherited-from-sysctl-ipv6.pkt
 }
 socket_api_getsockopt_keepinit_inherited_from_sysctl_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv4 cleanup
 socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv4_head() {
     atf_set timeout 10
@@ -5440,12 +6276,14 @@ socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv4_head() {
 }
 socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepintvl-inherited-from-sysctl-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepintvl-inherited-from-sysctl-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepintvl-inherited-from-sysctl-ipv4.pkt
 }
 socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv6 cleanup
 socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv6_head() {
     atf_set timeout 10
@@ -5453,12 +6291,14 @@ socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv6_head() {
 }
 socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepintvl-inherited-from-sysctl-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepintvl-inherited-from-sysctl-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-keepintvl-inherited-from-sysctl-ipv6.pkt
 }
 socket_api_getsockopt_keepintvl_inherited_from_sysctl_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_tcpinfo_ipv4 cleanup
 socket_api_getsockopt_tcpinfo_ipv4_head() {
     atf_set timeout 10
@@ -5466,12 +6306,14 @@ socket_api_getsockopt_tcpinfo_ipv4_head() {
 }
 socket_api_getsockopt_tcpinfo_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-tcpinfo-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-tcpinfo-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-tcpinfo-ipv4.pkt
 }
 socket_api_getsockopt_tcpinfo_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case socket_api_getsockopt_tcpinfo_ipv6 cleanup
 socket_api_getsockopt_tcpinfo_ipv6_head() {
     atf_set timeout 10
@@ -5479,12 +6321,134 @@ socket_api_getsockopt_tcpinfo_ipv6_head() {
 }
 socket_api_getsockopt_tcpinfo_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-tcpinfo-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-tcpinfo-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/getsockopt/socket-api-getsockopt-tcpinfo-ipv6.pkt
 }
 socket_api_getsockopt_tcpinfo_ipv6_cleanup() {
     restore_sysctls
 }
+
+atf_test_case socket_api_setsockopt_hoplimit_active_ipv6 cleanup
+socket_api_setsockopt_hoplimit_active_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_hoplimit_active_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-hoplimit-active-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-hoplimit-active-ipv6.pkt
+}
+socket_api_setsockopt_hoplimit_active_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_hoplimit_passive_ipv6 cleanup
+socket_api_setsockopt_hoplimit_passive_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_hoplimit_passive_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-hoplimit-passive-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-hoplimit-passive-ipv6.pkt
+}
+socket_api_setsockopt_hoplimit_passive_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_tos_active_ipv4 cleanup
+socket_api_setsockopt_tos_active_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_tos_active_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-tos-active-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-tos-active-ipv4.pkt
+}
+socket_api_setsockopt_tos_active_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_tos_passive_ipv4 cleanup
+socket_api_setsockopt_tos_passive_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_tos_passive_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-tos-passive-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-tos-passive-ipv4.pkt
+}
+socket_api_setsockopt_tos_passive_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_traffic_class_active_ipv6 cleanup
+socket_api_setsockopt_traffic_class_active_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_traffic_class_active_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-traffic-class-active-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-traffic-class-active-ipv6.pkt
+}
+socket_api_setsockopt_traffic_class_active_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_traffic_class_passive_ipv6 cleanup
+socket_api_setsockopt_traffic_class_passive_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_traffic_class_passive_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-traffic-class-passive-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-traffic-class-passive-ipv6.pkt
+}
+socket_api_setsockopt_traffic_class_passive_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_ttl_active_ipv4 cleanup
+socket_api_setsockopt_ttl_active_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_ttl_active_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-ttl-active-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-ttl-active-ipv4.pkt
+}
+socket_api_setsockopt_ttl_active_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case socket_api_setsockopt_ttl_passive_ipv4 cleanup
+socket_api_setsockopt_ttl_passive_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+socket_api_setsockopt_ttl_passive_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-ttl-passive-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/socket-api/setsockopt/socket-api-setsockopt-ttl-passive-ipv4.pkt
+}
+socket_api_setsockopt_ttl_passive_ipv4_cleanup() {
+    restore_sysctls
+}
+
 atf_test_case rcv_ack_with_data_closed_ipv4 cleanup
 rcv_ack_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -5492,12 +6456,14 @@ rcv_ack_with_data_closed_ipv4_head() {
 }
 rcv_ack_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-with-data-closed-ipv4.pkt
 }
 rcv_ack_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_closed_ipv6 cleanup
 rcv_ack_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -5505,12 +6471,14 @@ rcv_ack_with_data_closed_ipv6_head() {
 }
 rcv_ack_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-with-data-closed-ipv6.pkt
 }
 rcv_ack_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_closed_ipv4 cleanup
 rcv_ack_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -5518,12 +6486,14 @@ rcv_ack_without_data_closed_ipv4_head() {
 }
 rcv_ack_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-without-data-closed-ipv4.pkt
 }
 rcv_ack_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_closed_ipv6 cleanup
 rcv_ack_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -5531,12 +6501,14 @@ rcv_ack_without_data_closed_ipv6_head() {
 }
 rcv_ack_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-closed/rcv-ack-without-data-closed-ipv6.pkt
 }
 rcv_ack_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_listen_ipv4 cleanup
 rcv_ack_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -5544,12 +6516,14 @@ rcv_ack_with_data_listen_ipv4_head() {
 }
 rcv_ack_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-with-data-listen-ipv4.pkt
 }
 rcv_ack_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_listen_ipv6 cleanup
 rcv_ack_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -5557,12 +6531,14 @@ rcv_ack_with_data_listen_ipv6_head() {
 }
 rcv_ack_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-with-data-listen-ipv6.pkt
 }
 rcv_ack_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_listen_ipv4 cleanup
 rcv_ack_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -5570,12 +6546,14 @@ rcv_ack_without_data_listen_ipv4_head() {
 }
 rcv_ack_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-without-data-listen-ipv4.pkt
 }
 rcv_ack_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_listen_ipv6 cleanup
 rcv_ack_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -5583,12 +6561,14 @@ rcv_ack_without_data_listen_ipv6_head() {
 }
 rcv_ack_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-listen/rcv-ack-without-data-listen-ipv6.pkt
 }
 rcv_ack_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -5596,12 +6576,14 @@ rcv_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_ack_with_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_ack_with_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -5609,12 +6591,14 @@ rcv_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_ack_with_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_ack_with_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -5622,12 +6606,14 @@ rcv_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_ack_with_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_ack_with_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -5635,12 +6621,14 @@ rcv_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_ack_with_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_ack_with_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -5648,12 +6636,14 @@ rcv_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_ack_with_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_ack_with_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_with_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -5661,12 +6651,14 @@ rcv_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_ack_with_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_ack_with_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -5674,12 +6666,14 @@ rcv_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_ack_without_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_ack_without_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -5687,12 +6681,14 @@ rcv_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_ack_without_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_ack_without_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -5700,12 +6696,14 @@ rcv_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_ack_without_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_ack_without_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -5713,12 +6711,14 @@ rcv_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_ack_without_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_ack_without_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -5726,12 +6726,14 @@ rcv_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_ack_without_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_ack_without_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_ack_without_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -5739,12 +6741,14 @@ rcv_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_ack_without_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-ack-syn-sent/rcv-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_ack_without_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_closed_ipv4 cleanup
 rcv_fin_ack_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -5752,12 +6756,14 @@ rcv_fin_ack_with_data_closed_ipv4_head() {
 }
 rcv_fin_ack_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-with-data-closed-ipv4.pkt
 }
 rcv_fin_ack_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_closed_ipv6 cleanup
 rcv_fin_ack_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -5765,12 +6771,14 @@ rcv_fin_ack_with_data_closed_ipv6_head() {
 }
 rcv_fin_ack_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-with-data-closed-ipv6.pkt
 }
 rcv_fin_ack_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_closed_ipv4 cleanup
 rcv_fin_ack_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -5778,12 +6786,14 @@ rcv_fin_ack_without_data_closed_ipv4_head() {
 }
 rcv_fin_ack_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-without-data-closed-ipv4.pkt
 }
 rcv_fin_ack_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_closed_ipv6 cleanup
 rcv_fin_ack_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -5791,12 +6801,14 @@ rcv_fin_ack_without_data_closed_ipv6_head() {
 }
 rcv_fin_ack_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-closed/rcv-fin-ack-without-data-closed-ipv6.pkt
 }
 rcv_fin_ack_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_listen_ipv4 cleanup
 rcv_fin_ack_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -5804,12 +6816,14 @@ rcv_fin_ack_with_data_listen_ipv4_head() {
 }
 rcv_fin_ack_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-with-data-listen-ipv4.pkt
 }
 rcv_fin_ack_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_listen_ipv6 cleanup
 rcv_fin_ack_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -5817,12 +6831,14 @@ rcv_fin_ack_with_data_listen_ipv6_head() {
 }
 rcv_fin_ack_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-with-data-listen-ipv6.pkt
 }
 rcv_fin_ack_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_listen_ipv4 cleanup
 rcv_fin_ack_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -5830,12 +6846,14 @@ rcv_fin_ack_without_data_listen_ipv4_head() {
 }
 rcv_fin_ack_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-without-data-listen-ipv4.pkt
 }
 rcv_fin_ack_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_listen_ipv6 cleanup
 rcv_fin_ack_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -5843,12 +6861,14 @@ rcv_fin_ack_without_data_listen_ipv6_head() {
 }
 rcv_fin_ack_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-listen/rcv-fin-ack-without-data-listen-ipv6.pkt
 }
 rcv_fin_ack_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -5856,12 +6876,14 @@ rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -5869,12 +6891,14 @@ rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_fin_ack_with_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -5882,12 +6906,14 @@ rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -5895,12 +6921,14 @@ rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -5908,12 +6936,14 @@ rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -5921,12 +6951,14 @@ rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_fin_ack_with_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -5934,12 +6966,14 @@ rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -5947,12 +6981,14 @@ rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_fin_ack_without_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -5960,12 +6996,14 @@ rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -5973,12 +7011,14 @@ rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -5986,12 +7026,14 @@ rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -5999,12 +7041,14 @@ rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-ack-syn-sent/rcv-fin-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_fin_ack_without_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_with_data_closed_ipv4 cleanup
 rcv_fin_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -6012,12 +7056,14 @@ rcv_fin_with_data_closed_ipv4_head() {
 }
 rcv_fin_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-with-data-closed-ipv4.pkt
 }
 rcv_fin_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_with_data_closed_ipv6 cleanup
 rcv_fin_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -6025,12 +7071,14 @@ rcv_fin_with_data_closed_ipv6_head() {
 }
 rcv_fin_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-with-data-closed-ipv6.pkt
 }
 rcv_fin_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_without_data_closed_ipv4 cleanup
 rcv_fin_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -6038,12 +7086,14 @@ rcv_fin_without_data_closed_ipv4_head() {
 }
 rcv_fin_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-without-data-closed-ipv4.pkt
 }
 rcv_fin_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_without_data_closed_ipv6 cleanup
 rcv_fin_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -6051,12 +7101,14 @@ rcv_fin_without_data_closed_ipv6_head() {
 }
 rcv_fin_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-closed/rcv-fin-without-data-closed-ipv6.pkt
 }
 rcv_fin_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_with_data_listen_ipv4 cleanup
 rcv_fin_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -6064,12 +7116,14 @@ rcv_fin_with_data_listen_ipv4_head() {
 }
 rcv_fin_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-with-data-listen-ipv4.pkt
 }
 rcv_fin_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_with_data_listen_ipv6 cleanup
 rcv_fin_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -6077,12 +7131,14 @@ rcv_fin_with_data_listen_ipv6_head() {
 }
 rcv_fin_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-with-data-listen-ipv6.pkt
 }
 rcv_fin_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_without_data_listen_ipv4 cleanup
 rcv_fin_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -6090,12 +7146,14 @@ rcv_fin_without_data_listen_ipv4_head() {
 }
 rcv_fin_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-without-data-listen-ipv4.pkt
 }
 rcv_fin_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_without_data_listen_ipv6 cleanup
 rcv_fin_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -6103,12 +7161,14 @@ rcv_fin_without_data_listen_ipv6_head() {
 }
 rcv_fin_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-listen/rcv-fin-without-data-listen-ipv6.pkt
 }
 rcv_fin_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_with_data_syn_sent_ipv4 cleanup
 rcv_fin_with_data_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -6116,12 +7176,14 @@ rcv_fin_with_data_syn_sent_ipv4_head() {
 }
 rcv_fin_with_data_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-with-data-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-with-data-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-with-data-syn-sent-ipv4.pkt
 }
 rcv_fin_with_data_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_with_data_syn_sent_ipv6 cleanup
 rcv_fin_with_data_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -6129,12 +7191,14 @@ rcv_fin_with_data_syn_sent_ipv6_head() {
 }
 rcv_fin_with_data_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-with-data-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-with-data-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-with-data-syn-sent-ipv6.pkt
 }
 rcv_fin_with_data_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_without_data_syn_sent_ipv4 cleanup
 rcv_fin_without_data_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -6142,12 +7206,14 @@ rcv_fin_without_data_syn_sent_ipv4_head() {
 }
 rcv_fin_without_data_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-without-data-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-without-data-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-without-data-syn-sent-ipv4.pkt
 }
 rcv_fin_without_data_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_fin_without_data_syn_sent_ipv6 cleanup
 rcv_fin_without_data_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -6155,12 +7221,14 @@ rcv_fin_without_data_syn_sent_ipv6_head() {
 }
 rcv_fin_without_data_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-without-data-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-without-data-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-fin-syn-sent/rcv-fin-without-data-syn-sent-ipv6.pkt
 }
 rcv_fin_without_data_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_closed_ipv4 cleanup
 rcv_rst_ack_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -6168,12 +7236,14 @@ rcv_rst_ack_with_data_closed_ipv4_head() {
 }
 rcv_rst_ack_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-with-data-closed-ipv4.pkt
 }
 rcv_rst_ack_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_closed_ipv6 cleanup
 rcv_rst_ack_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -6181,12 +7251,14 @@ rcv_rst_ack_with_data_closed_ipv6_head() {
 }
 rcv_rst_ack_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-with-data-closed-ipv6.pkt
 }
 rcv_rst_ack_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_closed_ipv4 cleanup
 rcv_rst_ack_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -6194,12 +7266,14 @@ rcv_rst_ack_without_data_closed_ipv4_head() {
 }
 rcv_rst_ack_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-without-data-closed-ipv4.pkt
 }
 rcv_rst_ack_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_closed_ipv6 cleanup
 rcv_rst_ack_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -6207,12 +7281,14 @@ rcv_rst_ack_without_data_closed_ipv6_head() {
 }
 rcv_rst_ack_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-closed/rcv-rst-ack-without-data-closed-ipv6.pkt
 }
 rcv_rst_ack_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_listen_ipv4 cleanup
 rcv_rst_ack_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -6220,12 +7296,14 @@ rcv_rst_ack_with_data_listen_ipv4_head() {
 }
 rcv_rst_ack_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-with-data-listen-ipv4.pkt
 }
 rcv_rst_ack_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_listen_ipv6 cleanup
 rcv_rst_ack_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -6233,12 +7311,14 @@ rcv_rst_ack_with_data_listen_ipv6_head() {
 }
 rcv_rst_ack_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-with-data-listen-ipv6.pkt
 }
 rcv_rst_ack_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_listen_ipv4 cleanup
 rcv_rst_ack_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -6246,12 +7326,14 @@ rcv_rst_ack_without_data_listen_ipv4_head() {
 }
 rcv_rst_ack_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-without-data-listen-ipv4.pkt
 }
 rcv_rst_ack_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_listen_ipv6 cleanup
 rcv_rst_ack_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -6259,12 +7341,14 @@ rcv_rst_ack_without_data_listen_ipv6_head() {
 }
 rcv_rst_ack_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-listen/rcv-rst-ack-without-data-listen-ipv6.pkt
 }
 rcv_rst_ack_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -6272,12 +7356,14 @@ rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -6285,12 +7371,14 @@ rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_rst_ack_with_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -6298,12 +7386,14 @@ rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -6311,12 +7401,14 @@ rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -6324,12 +7416,14 @@ rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -6337,12 +7431,14 @@ rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_rst_ack_with_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -6350,12 +7446,14 @@ rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -6363,12 +7461,14 @@ rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_rst_ack_without_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -6376,12 +7476,14 @@ rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -6389,12 +7491,14 @@ rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -6402,12 +7506,14 @@ rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -6415,12 +7521,14 @@ rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-ack-syn-sent/rcv-rst-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_rst_ack_without_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_left_edge_insecure_ipv4 cleanup
 rcv_rst_close_wait_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6428,12 +7536,14 @@ rcv_rst_close_wait_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_close_wait_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_close_wait_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_left_edge_insecure_ipv6 cleanup
 rcv_rst_close_wait_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6441,12 +7551,14 @@ rcv_rst_close_wait_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_close_wait_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_close_wait_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_left_edge_secure_ipv4 cleanup
 rcv_rst_close_wait_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -6454,12 +7566,14 @@ rcv_rst_close_wait_left_edge_secure_ipv4_head() {
 }
 rcv_rst_close_wait_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-secure-ipv4.pkt
 }
 rcv_rst_close_wait_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_left_edge_secure_ipv6 cleanup
 rcv_rst_close_wait_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -6467,12 +7581,14 @@ rcv_rst_close_wait_left_edge_secure_ipv6_head() {
 }
 rcv_rst_close_wait_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-left-edge-secure-ipv6.pkt
 }
 rcv_rst_close_wait_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_left_insecure_ipv4 cleanup
 rcv_rst_close_wait_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6480,12 +7596,14 @@ rcv_rst_close_wait_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_close_wait_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_close_wait_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_left_insecure_ipv6 cleanup
 rcv_rst_close_wait_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6493,12 +7611,14 @@ rcv_rst_close_wait_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_close_wait_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_close_wait_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_left_secure_ipv4 cleanup
 rcv_rst_close_wait_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -6506,12 +7626,14 @@ rcv_rst_close_wait_outside_left_secure_ipv4_head() {
 }
 rcv_rst_close_wait_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-secure-ipv4.pkt
 }
 rcv_rst_close_wait_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_left_secure_ipv6 cleanup
 rcv_rst_close_wait_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -6519,12 +7641,14 @@ rcv_rst_close_wait_outside_left_secure_ipv6_head() {
 }
 rcv_rst_close_wait_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-left-secure-ipv6.pkt
 }
 rcv_rst_close_wait_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_right_insecure_ipv4 cleanup
 rcv_rst_close_wait_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6532,12 +7656,14 @@ rcv_rst_close_wait_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_close_wait_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_close_wait_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_right_insecure_ipv6 cleanup
 rcv_rst_close_wait_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6545,12 +7671,14 @@ rcv_rst_close_wait_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_close_wait_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_close_wait_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_right_secure_ipv4 cleanup
 rcv_rst_close_wait_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -6558,12 +7686,14 @@ rcv_rst_close_wait_outside_right_secure_ipv4_head() {
 }
 rcv_rst_close_wait_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-secure-ipv4.pkt
 }
 rcv_rst_close_wait_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_outside_right_secure_ipv6 cleanup
 rcv_rst_close_wait_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -6571,12 +7701,14 @@ rcv_rst_close_wait_outside_right_secure_ipv6_head() {
 }
 rcv_rst_close_wait_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-outside-right-secure-ipv6.pkt
 }
 rcv_rst_close_wait_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_right_edge_insecure_ipv4 cleanup
 rcv_rst_close_wait_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6584,12 +7716,14 @@ rcv_rst_close_wait_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_close_wait_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_close_wait_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_right_edge_insecure_ipv6 cleanup
 rcv_rst_close_wait_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6597,12 +7731,14 @@ rcv_rst_close_wait_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_close_wait_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_close_wait_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_right_edge_secure_ipv4 cleanup
 rcv_rst_close_wait_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -6610,12 +7746,14 @@ rcv_rst_close_wait_right_edge_secure_ipv4_head() {
 }
 rcv_rst_close_wait_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-secure-ipv4.pkt
 }
 rcv_rst_close_wait_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_close_wait_right_edge_secure_ipv6 cleanup
 rcv_rst_close_wait_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -6623,12 +7761,14 @@ rcv_rst_close_wait_right_edge_secure_ipv6_head() {
 }
 rcv_rst_close_wait_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-close-wait/rcv-rst-close-wait-right-edge-secure-ipv6.pkt
 }
 rcv_rst_close_wait_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_with_data_closed_ipv4 cleanup
 rcv_rst_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -6636,12 +7776,14 @@ rcv_rst_with_data_closed_ipv4_head() {
 }
 rcv_rst_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-with-data-closed-ipv4.pkt
 }
 rcv_rst_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_with_data_closed_ipv6 cleanup
 rcv_rst_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -6649,12 +7791,14 @@ rcv_rst_with_data_closed_ipv6_head() {
 }
 rcv_rst_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-with-data-closed-ipv6.pkt
 }
 rcv_rst_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_without_data_closed_ipv4 cleanup
 rcv_rst_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -6662,12 +7806,14 @@ rcv_rst_without_data_closed_ipv4_head() {
 }
 rcv_rst_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-without-data-closed-ipv4.pkt
 }
 rcv_rst_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_without_data_closed_ipv6 cleanup
 rcv_rst_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -6675,12 +7821,14 @@ rcv_rst_without_data_closed_ipv6_head() {
 }
 rcv_rst_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closed/rcv-rst-without-data-closed-ipv6.pkt
 }
 rcv_rst_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_left_edge_insecure_ipv4 cleanup
 rcv_rst_closing_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6688,12 +7836,14 @@ rcv_rst_closing_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_closing_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_closing_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_left_edge_insecure_ipv6 cleanup
 rcv_rst_closing_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6701,12 +7851,14 @@ rcv_rst_closing_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_closing_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_closing_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_left_edge_secure_ipv4 cleanup
 rcv_rst_closing_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -6714,12 +7866,14 @@ rcv_rst_closing_left_edge_secure_ipv4_head() {
 }
 rcv_rst_closing_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-secure-ipv4.pkt
 }
 rcv_rst_closing_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_left_edge_secure_ipv6 cleanup
 rcv_rst_closing_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -6727,12 +7881,14 @@ rcv_rst_closing_left_edge_secure_ipv6_head() {
 }
 rcv_rst_closing_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-left-edge-secure-ipv6.pkt
 }
 rcv_rst_closing_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_left_insecure_ipv4 cleanup
 rcv_rst_closing_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6740,12 +7896,14 @@ rcv_rst_closing_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_closing_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_closing_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_left_insecure_ipv6 cleanup
 rcv_rst_closing_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6753,12 +7911,14 @@ rcv_rst_closing_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_closing_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_closing_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_left_secure_ipv4 cleanup
 rcv_rst_closing_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -6766,12 +7926,14 @@ rcv_rst_closing_outside_left_secure_ipv4_head() {
 }
 rcv_rst_closing_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-secure-ipv4.pkt
 }
 rcv_rst_closing_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_left_secure_ipv6 cleanup
 rcv_rst_closing_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -6779,12 +7941,14 @@ rcv_rst_closing_outside_left_secure_ipv6_head() {
 }
 rcv_rst_closing_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-left-secure-ipv6.pkt
 }
 rcv_rst_closing_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_right_insecure_ipv4 cleanup
 rcv_rst_closing_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6792,12 +7956,14 @@ rcv_rst_closing_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_closing_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_closing_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_right_insecure_ipv6 cleanup
 rcv_rst_closing_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6805,12 +7971,14 @@ rcv_rst_closing_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_closing_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_closing_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_right_secure_ipv4 cleanup
 rcv_rst_closing_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -6818,12 +7986,14 @@ rcv_rst_closing_outside_right_secure_ipv4_head() {
 }
 rcv_rst_closing_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-secure-ipv4.pkt
 }
 rcv_rst_closing_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_outside_right_secure_ipv6 cleanup
 rcv_rst_closing_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -6831,12 +8001,14 @@ rcv_rst_closing_outside_right_secure_ipv6_head() {
 }
 rcv_rst_closing_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-outside-right-secure-ipv6.pkt
 }
 rcv_rst_closing_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_right_edge_insecure_ipv4 cleanup
 rcv_rst_closing_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6844,12 +8016,14 @@ rcv_rst_closing_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_closing_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_closing_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_right_edge_insecure_ipv6 cleanup
 rcv_rst_closing_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6857,12 +8031,14 @@ rcv_rst_closing_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_closing_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_closing_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_right_edge_secure_ipv4 cleanup
 rcv_rst_closing_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -6870,12 +8046,14 @@ rcv_rst_closing_right_edge_secure_ipv4_head() {
 }
 rcv_rst_closing_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-secure-ipv4.pkt
 }
 rcv_rst_closing_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_closing_right_edge_secure_ipv6 cleanup
 rcv_rst_closing_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -6883,12 +8061,14 @@ rcv_rst_closing_right_edge_secure_ipv6_head() {
 }
 rcv_rst_closing_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-closing/rcv-rst-closing-right-edge-secure-ipv6.pkt
 }
 rcv_rst_closing_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_left_edge_insecure_ipv4 cleanup
 rcv_rst_established_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6896,12 +8076,14 @@ rcv_rst_established_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_established_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_established_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_left_edge_insecure_ipv6 cleanup
 rcv_rst_established_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6909,12 +8091,14 @@ rcv_rst_established_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_established_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_established_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_left_edge_secure_ipv4 cleanup
 rcv_rst_established_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -6922,12 +8106,14 @@ rcv_rst_established_left_edge_secure_ipv4_head() {
 }
 rcv_rst_established_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-secure-ipv4.pkt
 }
 rcv_rst_established_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_left_edge_secure_ipv6 cleanup
 rcv_rst_established_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -6935,12 +8121,14 @@ rcv_rst_established_left_edge_secure_ipv6_head() {
 }
 rcv_rst_established_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-left-edge-secure-ipv6.pkt
 }
 rcv_rst_established_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_left_insecure_ipv4 cleanup
 rcv_rst_established_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -6948,12 +8136,14 @@ rcv_rst_established_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_established_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_established_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_left_insecure_ipv6 cleanup
 rcv_rst_established_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -6961,12 +8151,14 @@ rcv_rst_established_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_established_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_established_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_left_secure_ipv4 cleanup
 rcv_rst_established_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -6974,12 +8166,14 @@ rcv_rst_established_outside_left_secure_ipv4_head() {
 }
 rcv_rst_established_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-secure-ipv4.pkt
 }
 rcv_rst_established_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_left_secure_ipv6 cleanup
 rcv_rst_established_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -6987,12 +8181,14 @@ rcv_rst_established_outside_left_secure_ipv6_head() {
 }
 rcv_rst_established_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-left-secure-ipv6.pkt
 }
 rcv_rst_established_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_right_insecure_ipv4 cleanup
 rcv_rst_established_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7000,12 +8196,14 @@ rcv_rst_established_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_established_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_established_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_right_insecure_ipv6 cleanup
 rcv_rst_established_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7013,12 +8211,14 @@ rcv_rst_established_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_established_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_established_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_right_secure_ipv4 cleanup
 rcv_rst_established_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -7026,12 +8226,14 @@ rcv_rst_established_outside_right_secure_ipv4_head() {
 }
 rcv_rst_established_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-secure-ipv4.pkt
 }
 rcv_rst_established_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_outside_right_secure_ipv6 cleanup
 rcv_rst_established_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -7039,12 +8241,14 @@ rcv_rst_established_outside_right_secure_ipv6_head() {
 }
 rcv_rst_established_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-outside-right-secure-ipv6.pkt
 }
 rcv_rst_established_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_right_edge_insecure_ipv4 cleanup
 rcv_rst_established_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7052,12 +8256,14 @@ rcv_rst_established_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_established_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_established_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_right_edge_insecure_ipv6 cleanup
 rcv_rst_established_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7065,12 +8271,14 @@ rcv_rst_established_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_established_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_established_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_right_edge_secure_ipv4 cleanup
 rcv_rst_established_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7078,12 +8286,14 @@ rcv_rst_established_right_edge_secure_ipv4_head() {
 }
 rcv_rst_established_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-secure-ipv4.pkt
 }
 rcv_rst_established_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_established_right_edge_secure_ipv6 cleanup
 rcv_rst_established_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7091,12 +8301,14 @@ rcv_rst_established_right_edge_secure_ipv6_head() {
 }
 rcv_rst_established_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-established/rcv-rst-established-right-edge-secure-ipv6.pkt
 }
 rcv_rst_established_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_left_edge_insecure_ipv4 cleanup
 rcv_rst_fin_wait_1_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7104,12 +8316,14 @@ rcv_rst_fin_wait_1_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_left_edge_insecure_ipv6 cleanup
 rcv_rst_fin_wait_1_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7117,12 +8331,14 @@ rcv_rst_fin_wait_1_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_left_edge_secure_ipv4 cleanup
 rcv_rst_fin_wait_1_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7130,12 +8346,14 @@ rcv_rst_fin_wait_1_left_edge_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_left_edge_secure_ipv6 cleanup
 rcv_rst_fin_wait_1_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7143,12 +8361,14 @@ rcv_rst_fin_wait_1_left_edge_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-left-edge-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_left_insecure_ipv4 cleanup
 rcv_rst_fin_wait_1_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7156,12 +8376,14 @@ rcv_rst_fin_wait_1_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_left_insecure_ipv6 cleanup
 rcv_rst_fin_wait_1_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7169,12 +8391,14 @@ rcv_rst_fin_wait_1_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_left_secure_ipv4 cleanup
 rcv_rst_fin_wait_1_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -7182,12 +8406,14 @@ rcv_rst_fin_wait_1_outside_left_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_left_secure_ipv6 cleanup
 rcv_rst_fin_wait_1_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -7195,12 +8421,14 @@ rcv_rst_fin_wait_1_outside_left_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-left-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_right_insecure_ipv4 cleanup
 rcv_rst_fin_wait_1_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7208,12 +8436,14 @@ rcv_rst_fin_wait_1_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_right_insecure_ipv6 cleanup
 rcv_rst_fin_wait_1_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7221,12 +8451,14 @@ rcv_rst_fin_wait_1_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_right_secure_ipv4 cleanup
 rcv_rst_fin_wait_1_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -7234,12 +8466,14 @@ rcv_rst_fin_wait_1_outside_right_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_outside_right_secure_ipv6 cleanup
 rcv_rst_fin_wait_1_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -7247,12 +8481,14 @@ rcv_rst_fin_wait_1_outside_right_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-outside-right-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_right_edge_insecure_ipv4 cleanup
 rcv_rst_fin_wait_1_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7260,12 +8496,14 @@ rcv_rst_fin_wait_1_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_right_edge_insecure_ipv6 cleanup
 rcv_rst_fin_wait_1_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7273,12 +8511,14 @@ rcv_rst_fin_wait_1_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_right_edge_secure_ipv4 cleanup
 rcv_rst_fin_wait_1_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7286,12 +8526,14 @@ rcv_rst_fin_wait_1_right_edge_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_1_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_1_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_1_right_edge_secure_ipv6 cleanup
 rcv_rst_fin_wait_1_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7299,12 +8541,14 @@ rcv_rst_fin_wait_1_right_edge_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_1_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-1/rcv-rst-fin-wait-1-right-edge-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_1_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_left_edge_insecure_ipv4 cleanup
 rcv_rst_fin_wait_2_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7312,12 +8556,14 @@ rcv_rst_fin_wait_2_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_left_edge_insecure_ipv6 cleanup
 rcv_rst_fin_wait_2_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7325,12 +8571,14 @@ rcv_rst_fin_wait_2_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_left_edge_secure_ipv4 cleanup
 rcv_rst_fin_wait_2_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7338,12 +8586,14 @@ rcv_rst_fin_wait_2_left_edge_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_left_edge_secure_ipv6 cleanup
 rcv_rst_fin_wait_2_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7351,12 +8601,14 @@ rcv_rst_fin_wait_2_left_edge_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-left-edge-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_left_insecure_ipv4 cleanup
 rcv_rst_fin_wait_2_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7364,12 +8616,14 @@ rcv_rst_fin_wait_2_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_left_insecure_ipv6 cleanup
 rcv_rst_fin_wait_2_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7377,12 +8631,14 @@ rcv_rst_fin_wait_2_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_left_secure_ipv4 cleanup
 rcv_rst_fin_wait_2_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -7390,12 +8646,14 @@ rcv_rst_fin_wait_2_outside_left_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_left_secure_ipv6 cleanup
 rcv_rst_fin_wait_2_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -7403,12 +8661,14 @@ rcv_rst_fin_wait_2_outside_left_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-left-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_right_insecure_ipv4 cleanup
 rcv_rst_fin_wait_2_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7416,12 +8676,14 @@ rcv_rst_fin_wait_2_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_right_insecure_ipv6 cleanup
 rcv_rst_fin_wait_2_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7429,12 +8691,14 @@ rcv_rst_fin_wait_2_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_right_secure_ipv4 cleanup
 rcv_rst_fin_wait_2_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -7442,12 +8706,14 @@ rcv_rst_fin_wait_2_outside_right_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_outside_right_secure_ipv6 cleanup
 rcv_rst_fin_wait_2_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -7455,12 +8721,14 @@ rcv_rst_fin_wait_2_outside_right_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-outside-right-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_right_edge_insecure_ipv4 cleanup
 rcv_rst_fin_wait_2_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7468,12 +8736,14 @@ rcv_rst_fin_wait_2_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_right_edge_insecure_ipv6 cleanup
 rcv_rst_fin_wait_2_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7481,12 +8751,14 @@ rcv_rst_fin_wait_2_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_right_edge_secure_ipv4 cleanup
 rcv_rst_fin_wait_2_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7494,12 +8766,14 @@ rcv_rst_fin_wait_2_right_edge_secure_ipv4_head() {
 }
 rcv_rst_fin_wait_2_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-secure-ipv4.pkt
 }
 rcv_rst_fin_wait_2_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_fin_wait_2_right_edge_secure_ipv6 cleanup
 rcv_rst_fin_wait_2_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7507,12 +8781,14 @@ rcv_rst_fin_wait_2_right_edge_secure_ipv6_head() {
 }
 rcv_rst_fin_wait_2_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-fin-wait-2/rcv-rst-fin-wait-2-right-edge-secure-ipv6.pkt
 }
 rcv_rst_fin_wait_2_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_left_edge_insecure_ipv4 cleanup
 rcv_rst_last_ack_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7520,12 +8796,14 @@ rcv_rst_last_ack_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_last_ack_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_last_ack_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_left_edge_insecure_ipv6 cleanup
 rcv_rst_last_ack_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7533,12 +8811,14 @@ rcv_rst_last_ack_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_last_ack_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_last_ack_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_left_edge_secure_ipv4 cleanup
 rcv_rst_last_ack_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7546,12 +8826,14 @@ rcv_rst_last_ack_left_edge_secure_ipv4_head() {
 }
 rcv_rst_last_ack_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-secure-ipv4.pkt
 }
 rcv_rst_last_ack_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_left_edge_secure_ipv6 cleanup
 rcv_rst_last_ack_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7559,12 +8841,14 @@ rcv_rst_last_ack_left_edge_secure_ipv6_head() {
 }
 rcv_rst_last_ack_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-left-edge-secure-ipv6.pkt
 }
 rcv_rst_last_ack_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_left_insecure_ipv4 cleanup
 rcv_rst_last_ack_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7572,12 +8856,14 @@ rcv_rst_last_ack_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_last_ack_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_last_ack_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_left_insecure_ipv6 cleanup
 rcv_rst_last_ack_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7585,12 +8871,14 @@ rcv_rst_last_ack_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_last_ack_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_last_ack_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_left_secure_ipv4 cleanup
 rcv_rst_last_ack_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -7598,12 +8886,14 @@ rcv_rst_last_ack_outside_left_secure_ipv4_head() {
 }
 rcv_rst_last_ack_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-secure-ipv4.pkt
 }
 rcv_rst_last_ack_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_left_secure_ipv6 cleanup
 rcv_rst_last_ack_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -7611,12 +8901,14 @@ rcv_rst_last_ack_outside_left_secure_ipv6_head() {
 }
 rcv_rst_last_ack_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-left-secure-ipv6.pkt
 }
 rcv_rst_last_ack_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_right_insecure_ipv4 cleanup
 rcv_rst_last_ack_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7624,12 +8916,14 @@ rcv_rst_last_ack_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_last_ack_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_last_ack_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_right_insecure_ipv6 cleanup
 rcv_rst_last_ack_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7637,12 +8931,14 @@ rcv_rst_last_ack_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_last_ack_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_last_ack_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_right_secure_ipv4 cleanup
 rcv_rst_last_ack_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -7650,12 +8946,14 @@ rcv_rst_last_ack_outside_right_secure_ipv4_head() {
 }
 rcv_rst_last_ack_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-secure-ipv4.pkt
 }
 rcv_rst_last_ack_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_outside_right_secure_ipv6 cleanup
 rcv_rst_last_ack_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -7663,12 +8961,14 @@ rcv_rst_last_ack_outside_right_secure_ipv6_head() {
 }
 rcv_rst_last_ack_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-outside-right-secure-ipv6.pkt
 }
 rcv_rst_last_ack_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_right_edge_insecure_ipv4 cleanup
 rcv_rst_last_ack_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7676,12 +8976,14 @@ rcv_rst_last_ack_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_last_ack_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_last_ack_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_right_edge_insecure_ipv6 cleanup
 rcv_rst_last_ack_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7689,12 +8991,14 @@ rcv_rst_last_ack_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_last_ack_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_last_ack_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_right_edge_secure_ipv4 cleanup
 rcv_rst_last_ack_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7702,12 +9006,14 @@ rcv_rst_last_ack_right_edge_secure_ipv4_head() {
 }
 rcv_rst_last_ack_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-secure-ipv4.pkt
 }
 rcv_rst_last_ack_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_last_ack_right_edge_secure_ipv6 cleanup
 rcv_rst_last_ack_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7715,12 +9021,14 @@ rcv_rst_last_ack_right_edge_secure_ipv6_head() {
 }
 rcv_rst_last_ack_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-last-ack/rcv-rst-last-ack-right-edge-secure-ipv6.pkt
 }
 rcv_rst_last_ack_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_with_data_listen_ipv4 cleanup
 rcv_rst_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -7728,12 +9036,14 @@ rcv_rst_with_data_listen_ipv4_head() {
 }
 rcv_rst_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-with-data-listen-ipv4.pkt
 }
 rcv_rst_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_with_data_listen_ipv6 cleanup
 rcv_rst_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -7741,12 +9051,14 @@ rcv_rst_with_data_listen_ipv6_head() {
 }
 rcv_rst_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-with-data-listen-ipv6.pkt
 }
 rcv_rst_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_without_data_listen_ipv4 cleanup
 rcv_rst_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -7754,12 +9066,14 @@ rcv_rst_without_data_listen_ipv4_head() {
 }
 rcv_rst_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-without-data-listen-ipv4.pkt
 }
 rcv_rst_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_without_data_listen_ipv6 cleanup
 rcv_rst_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -7767,12 +9081,14 @@ rcv_rst_without_data_listen_ipv6_head() {
 }
 rcv_rst_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-listen/rcv-rst-without-data-listen-ipv6.pkt
 }
 rcv_rst_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7780,12 +9096,14 @@ rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7793,12 +9111,14 @@ rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7806,12 +9126,14 @@ rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7819,12 +9141,14 @@ rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-left-edge-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7832,12 +9156,14 @@ rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7845,12 +9171,14 @@ rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -7858,12 +9186,14 @@ rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -7871,12 +9201,14 @@ rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-left-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7884,12 +9216,14 @@ rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7897,12 +9231,14 @@ rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -7910,12 +9246,14 @@ rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -7923,12 +9261,14 @@ rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-outside-right-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7936,12 +9276,14 @@ rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -7949,12 +9291,14 @@ rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -7962,12 +9306,14 @@ rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -7975,12 +9321,14 @@ rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-listen-right-edge-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_listen_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -7988,12 +9336,14 @@ rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8001,12 +9351,14 @@ rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -8014,12 +9366,14 @@ rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -8027,12 +9381,14 @@ rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-left-edge-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8040,12 +9396,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8053,12 +9411,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -8066,12 +9426,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -8079,12 +9441,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-left-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8092,12 +9456,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8105,12 +9471,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -8118,12 +9486,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -8131,12 +9501,14 @@ rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-outside-right-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8144,12 +9516,14 @@ rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8157,12 +9531,14 @@ rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv4 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -8170,12 +9546,14 @@ rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv4_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-secure-ipv4.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv6 cleanup
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -8183,12 +9561,14 @@ rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv6_head() {
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-rcvd/rcv-rst-syn-rcvd-via-syn-sent-right-edge-secure-ipv6.pkt
 }
 rcv_rst_syn_rcvd_via_syn_sent_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_with_data_syn_sent_ipv4 cleanup
 rcv_rst_with_data_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -8196,12 +9576,14 @@ rcv_rst_with_data_syn_sent_ipv4_head() {
 }
 rcv_rst_with_data_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-with-data-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-with-data-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-with-data-syn-sent-ipv4.pkt
 }
 rcv_rst_with_data_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_with_data_syn_sent_ipv6 cleanup
 rcv_rst_with_data_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -8209,12 +9591,14 @@ rcv_rst_with_data_syn_sent_ipv6_head() {
 }
 rcv_rst_with_data_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-with-data-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-with-data-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-with-data-syn-sent-ipv6.pkt
 }
 rcv_rst_with_data_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_without_data_syn_sent_ipv4 cleanup
 rcv_rst_without_data_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -8222,12 +9606,14 @@ rcv_rst_without_data_syn_sent_ipv4_head() {
 }
 rcv_rst_without_data_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-without-data-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-without-data-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-without-data-syn-sent-ipv4.pkt
 }
 rcv_rst_without_data_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_without_data_syn_sent_ipv6 cleanup
 rcv_rst_without_data_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -8235,12 +9621,14 @@ rcv_rst_without_data_syn_sent_ipv6_head() {
 }
 rcv_rst_without_data_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-without-data-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-without-data-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-syn-sent/rcv-rst-without-data-syn-sent-ipv6.pkt
 }
 rcv_rst_without_data_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_left_edge_insecure_ipv4 cleanup
 rcv_rst_time_wait_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8248,12 +9636,14 @@ rcv_rst_time_wait_left_edge_insecure_ipv4_head() {
 }
 rcv_rst_time_wait_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-insecure-ipv4.pkt
 }
 rcv_rst_time_wait_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_left_edge_insecure_ipv6 cleanup
 rcv_rst_time_wait_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8261,12 +9651,14 @@ rcv_rst_time_wait_left_edge_insecure_ipv6_head() {
 }
 rcv_rst_time_wait_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-insecure-ipv6.pkt
 }
 rcv_rst_time_wait_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_left_edge_secure_ipv4 cleanup
 rcv_rst_time_wait_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -8274,12 +9666,14 @@ rcv_rst_time_wait_left_edge_secure_ipv4_head() {
 }
 rcv_rst_time_wait_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-secure-ipv4.pkt
 }
 rcv_rst_time_wait_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_left_edge_secure_ipv6 cleanup
 rcv_rst_time_wait_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -8287,12 +9681,14 @@ rcv_rst_time_wait_left_edge_secure_ipv6_head() {
 }
 rcv_rst_time_wait_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-left-edge-secure-ipv6.pkt
 }
 rcv_rst_time_wait_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_left_insecure_ipv4 cleanup
 rcv_rst_time_wait_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8300,12 +9696,14 @@ rcv_rst_time_wait_outside_left_insecure_ipv4_head() {
 }
 rcv_rst_time_wait_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-insecure-ipv4.pkt
 }
 rcv_rst_time_wait_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_left_insecure_ipv6 cleanup
 rcv_rst_time_wait_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8313,12 +9711,14 @@ rcv_rst_time_wait_outside_left_insecure_ipv6_head() {
 }
 rcv_rst_time_wait_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-insecure-ipv6.pkt
 }
 rcv_rst_time_wait_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_left_secure_ipv4 cleanup
 rcv_rst_time_wait_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -8326,12 +9726,14 @@ rcv_rst_time_wait_outside_left_secure_ipv4_head() {
 }
 rcv_rst_time_wait_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-secure-ipv4.pkt
 }
 rcv_rst_time_wait_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_left_secure_ipv6 cleanup
 rcv_rst_time_wait_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -8339,12 +9741,14 @@ rcv_rst_time_wait_outside_left_secure_ipv6_head() {
 }
 rcv_rst_time_wait_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-left-secure-ipv6.pkt
 }
 rcv_rst_time_wait_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_right_insecure_ipv4 cleanup
 rcv_rst_time_wait_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8352,12 +9756,14 @@ rcv_rst_time_wait_outside_right_insecure_ipv4_head() {
 }
 rcv_rst_time_wait_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-insecure-ipv4.pkt
 }
 rcv_rst_time_wait_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_right_insecure_ipv6 cleanup
 rcv_rst_time_wait_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8365,12 +9771,14 @@ rcv_rst_time_wait_outside_right_insecure_ipv6_head() {
 }
 rcv_rst_time_wait_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-insecure-ipv6.pkt
 }
 rcv_rst_time_wait_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_right_secure_ipv4 cleanup
 rcv_rst_time_wait_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -8378,12 +9786,14 @@ rcv_rst_time_wait_outside_right_secure_ipv4_head() {
 }
 rcv_rst_time_wait_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-secure-ipv4.pkt
 }
 rcv_rst_time_wait_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_outside_right_secure_ipv6 cleanup
 rcv_rst_time_wait_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -8391,12 +9801,14 @@ rcv_rst_time_wait_outside_right_secure_ipv6_head() {
 }
 rcv_rst_time_wait_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-outside-right-secure-ipv6.pkt
 }
 rcv_rst_time_wait_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_right_edge_insecure_ipv4 cleanup
 rcv_rst_time_wait_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8404,12 +9816,14 @@ rcv_rst_time_wait_right_edge_insecure_ipv4_head() {
 }
 rcv_rst_time_wait_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-insecure-ipv4.pkt
 }
 rcv_rst_time_wait_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_right_edge_insecure_ipv6 cleanup
 rcv_rst_time_wait_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8417,12 +9831,14 @@ rcv_rst_time_wait_right_edge_insecure_ipv6_head() {
 }
 rcv_rst_time_wait_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-insecure-ipv6.pkt
 }
 rcv_rst_time_wait_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_right_edge_secure_ipv4 cleanup
 rcv_rst_time_wait_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -8430,12 +9846,14 @@ rcv_rst_time_wait_right_edge_secure_ipv4_head() {
 }
 rcv_rst_time_wait_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-secure-ipv4.pkt
 }
 rcv_rst_time_wait_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_rst_time_wait_right_edge_secure_ipv6 cleanup
 rcv_rst_time_wait_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -8443,12 +9861,14 @@ rcv_rst_time_wait_right_edge_secure_ipv6_head() {
 }
 rcv_rst_time_wait_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-rst-time-wait/rcv-rst-time-wait-right-edge-secure-ipv6.pkt
 }
 rcv_rst_time_wait_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_closed_ipv4 cleanup
 rcv_syn_ack_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -8456,12 +9876,14 @@ rcv_syn_ack_with_data_closed_ipv4_head() {
 }
 rcv_syn_ack_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-with-data-closed-ipv4.pkt
 }
 rcv_syn_ack_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_closed_ipv6 cleanup
 rcv_syn_ack_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -8469,12 +9891,14 @@ rcv_syn_ack_with_data_closed_ipv6_head() {
 }
 rcv_syn_ack_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-with-data-closed-ipv6.pkt
 }
 rcv_syn_ack_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_closed_ipv4 cleanup
 rcv_syn_ack_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -8482,12 +9906,14 @@ rcv_syn_ack_without_data_closed_ipv4_head() {
 }
 rcv_syn_ack_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-without-data-closed-ipv4.pkt
 }
 rcv_syn_ack_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_closed_ipv6 cleanup
 rcv_syn_ack_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -8495,12 +9921,14 @@ rcv_syn_ack_without_data_closed_ipv6_head() {
 }
 rcv_syn_ack_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-closed/rcv-syn-ack-without-data-closed-ipv6.pkt
 }
 rcv_syn_ack_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_listen_ipv4 cleanup
 rcv_syn_ack_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -8508,12 +9936,14 @@ rcv_syn_ack_with_data_listen_ipv4_head() {
 }
 rcv_syn_ack_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-with-data-listen-ipv4.pkt
 }
 rcv_syn_ack_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_listen_ipv6 cleanup
 rcv_syn_ack_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -8521,12 +9951,14 @@ rcv_syn_ack_with_data_listen_ipv6_head() {
 }
 rcv_syn_ack_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-with-data-listen-ipv6.pkt
 }
 rcv_syn_ack_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_listen_ipv4 cleanup
 rcv_syn_ack_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -8534,12 +9966,14 @@ rcv_syn_ack_without_data_listen_ipv4_head() {
 }
 rcv_syn_ack_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-without-data-listen-ipv4.pkt
 }
 rcv_syn_ack_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_listen_ipv6 cleanup
 rcv_syn_ack_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -8547,12 +9981,14 @@ rcv_syn_ack_without_data_listen_ipv6_head() {
 }
 rcv_syn_ack_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-listen/rcv-syn-ack-without-data-listen-ipv6.pkt
 }
 rcv_syn_ack_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -8560,12 +9996,14 @@ rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -8573,12 +10011,14 @@ rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_syn_ack_with_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -8586,12 +10026,14 @@ rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -8599,12 +10041,14 @@ rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -8612,12 +10056,14 @@ rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -8625,12 +10071,14 @@ rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-with-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_syn_ack_with_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv4 cleanup
 rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
     atf_set timeout 10
@@ -8638,12 +10086,14 @@ rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv4_head() {
 }
 rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-left-edge-ipv4.pkt
 }
 rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv6 cleanup
 rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
     atf_set timeout 10
@@ -8651,12 +10101,14 @@ rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv6_head() {
 }
 rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-left-edge-ipv6.pkt
 }
 rcv_syn_ack_without_data_syn_sent_ack_left_edge_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv4 cleanup
 rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
     atf_set timeout 10
@@ -8664,12 +10116,14 @@ rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv4_head() {
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-left-ipv4.pkt
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv6 cleanup
 rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
     atf_set timeout 10
@@ -8677,12 +10131,14 @@ rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv6_head() {
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-left-ipv6.pkt
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_left_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv4 cleanup
 rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
     atf_set timeout 10
@@ -8690,12 +10146,14 @@ rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv4_head() {
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-right-ipv4.pkt
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv6 cleanup
 rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
     atf_set timeout 10
@@ -8703,12 +10161,14 @@ rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv6_head() {
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-ack-syn-sent/rcv-syn-ack-without-data-syn-sent-ack-outside-right-ipv6.pkt
 }
 rcv_syn_ack_without_data_syn_sent_ack_outside_right_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_left_edge_insecure_ipv4 cleanup
 rcv_syn_close_wait_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8716,12 +10176,14 @@ rcv_syn_close_wait_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_close_wait_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_close_wait_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_left_edge_insecure_ipv6 cleanup
 rcv_syn_close_wait_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8729,12 +10191,14 @@ rcv_syn_close_wait_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_close_wait_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_close_wait_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_left_edge_secure_ipv4 cleanup
 rcv_syn_close_wait_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -8742,12 +10206,14 @@ rcv_syn_close_wait_left_edge_secure_ipv4_head() {
 }
 rcv_syn_close_wait_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-secure-ipv4.pkt
 }
 rcv_syn_close_wait_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_left_edge_secure_ipv6 cleanup
 rcv_syn_close_wait_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -8755,12 +10221,14 @@ rcv_syn_close_wait_left_edge_secure_ipv6_head() {
 }
 rcv_syn_close_wait_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-left-edge-secure-ipv6.pkt
 }
 rcv_syn_close_wait_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_left_insecure_ipv4 cleanup
 rcv_syn_close_wait_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8768,12 +10236,14 @@ rcv_syn_close_wait_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_close_wait_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_close_wait_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_left_insecure_ipv6 cleanup
 rcv_syn_close_wait_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8781,12 +10251,14 @@ rcv_syn_close_wait_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_close_wait_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_close_wait_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_left_secure_ipv4 cleanup
 rcv_syn_close_wait_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -8794,12 +10266,14 @@ rcv_syn_close_wait_outside_left_secure_ipv4_head() {
 }
 rcv_syn_close_wait_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-secure-ipv4.pkt
 }
 rcv_syn_close_wait_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_left_secure_ipv6 cleanup
 rcv_syn_close_wait_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -8807,12 +10281,14 @@ rcv_syn_close_wait_outside_left_secure_ipv6_head() {
 }
 rcv_syn_close_wait_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-left-secure-ipv6.pkt
 }
 rcv_syn_close_wait_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_right_insecure_ipv4 cleanup
 rcv_syn_close_wait_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8820,12 +10296,14 @@ rcv_syn_close_wait_outside_right_insecure_ipv4_head() {
 }
 rcv_syn_close_wait_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_close_wait_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_right_insecure_ipv6 cleanup
 rcv_syn_close_wait_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8833,12 +10311,14 @@ rcv_syn_close_wait_outside_right_insecure_ipv6_head() {
 }
 rcv_syn_close_wait_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_close_wait_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_right_secure_ipv4 cleanup
 rcv_syn_close_wait_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -8846,12 +10326,14 @@ rcv_syn_close_wait_outside_right_secure_ipv4_head() {
 }
 rcv_syn_close_wait_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-secure-ipv4.pkt
 }
 rcv_syn_close_wait_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_outside_right_secure_ipv6 cleanup
 rcv_syn_close_wait_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -8859,12 +10341,14 @@ rcv_syn_close_wait_outside_right_secure_ipv6_head() {
 }
 rcv_syn_close_wait_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-outside-right-secure-ipv6.pkt
 }
 rcv_syn_close_wait_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_right_edge_insecure_ipv4 cleanup
 rcv_syn_close_wait_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8872,12 +10356,14 @@ rcv_syn_close_wait_right_edge_insecure_ipv4_head() {
 }
 rcv_syn_close_wait_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_close_wait_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_right_edge_insecure_ipv6 cleanup
 rcv_syn_close_wait_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8885,12 +10371,14 @@ rcv_syn_close_wait_right_edge_insecure_ipv6_head() {
 }
 rcv_syn_close_wait_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_close_wait_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_right_edge_secure_ipv4 cleanup
 rcv_syn_close_wait_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -8898,12 +10386,14 @@ rcv_syn_close_wait_right_edge_secure_ipv4_head() {
 }
 rcv_syn_close_wait_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-secure-ipv4.pkt
 }
 rcv_syn_close_wait_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_close_wait_right_edge_secure_ipv6 cleanup
 rcv_syn_close_wait_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -8911,12 +10401,14 @@ rcv_syn_close_wait_right_edge_secure_ipv6_head() {
 }
 rcv_syn_close_wait_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-close-wait/rcv-syn-close-wait-right-edge-secure-ipv6.pkt
 }
 rcv_syn_close_wait_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_with_data_closed_ipv4 cleanup
 rcv_syn_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -8924,12 +10416,14 @@ rcv_syn_with_data_closed_ipv4_head() {
 }
 rcv_syn_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-with-data-closed-ipv4.pkt
 }
 rcv_syn_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_with_data_closed_ipv6 cleanup
 rcv_syn_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -8937,12 +10431,14 @@ rcv_syn_with_data_closed_ipv6_head() {
 }
 rcv_syn_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-with-data-closed-ipv6.pkt
 }
 rcv_syn_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_without_data_closed_ipv4 cleanup
 rcv_syn_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -8950,12 +10446,14 @@ rcv_syn_without_data_closed_ipv4_head() {
 }
 rcv_syn_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-without-data-closed-ipv4.pkt
 }
 rcv_syn_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_without_data_closed_ipv6 cleanup
 rcv_syn_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -8963,12 +10461,14 @@ rcv_syn_without_data_closed_ipv6_head() {
 }
 rcv_syn_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closed/rcv-syn-without-data-closed-ipv6.pkt
 }
 rcv_syn_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_left_edge_insecure_ipv4 cleanup
 rcv_syn_closing_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -8976,12 +10476,14 @@ rcv_syn_closing_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_closing_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_closing_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_left_edge_insecure_ipv6 cleanup
 rcv_syn_closing_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -8989,12 +10491,14 @@ rcv_syn_closing_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_closing_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_closing_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_left_edge_secure_ipv4 cleanup
 rcv_syn_closing_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9002,12 +10506,14 @@ rcv_syn_closing_left_edge_secure_ipv4_head() {
 }
 rcv_syn_closing_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-secure-ipv4.pkt
 }
 rcv_syn_closing_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_left_edge_secure_ipv6 cleanup
 rcv_syn_closing_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9015,12 +10521,14 @@ rcv_syn_closing_left_edge_secure_ipv6_head() {
 }
 rcv_syn_closing_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-left-edge-secure-ipv6.pkt
 }
 rcv_syn_closing_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_left_insecure_ipv4 cleanup
 rcv_syn_closing_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9028,12 +10536,14 @@ rcv_syn_closing_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_closing_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_closing_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_left_insecure_ipv6 cleanup
 rcv_syn_closing_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9041,12 +10551,14 @@ rcv_syn_closing_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_closing_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_closing_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_left_secure_ipv4 cleanup
 rcv_syn_closing_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -9054,12 +10566,14 @@ rcv_syn_closing_outside_left_secure_ipv4_head() {
 }
 rcv_syn_closing_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-secure-ipv4.pkt
 }
 rcv_syn_closing_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_left_secure_ipv6 cleanup
 rcv_syn_closing_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -9067,12 +10581,14 @@ rcv_syn_closing_outside_left_secure_ipv6_head() {
 }
 rcv_syn_closing_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-left-secure-ipv6.pkt
 }
 rcv_syn_closing_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_right_insecure_ipv4 cleanup
 rcv_syn_closing_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9080,12 +10596,14 @@ rcv_syn_closing_outside_right_insecure_ipv4_head() {
 }
 rcv_syn_closing_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_closing_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_right_insecure_ipv6 cleanup
 rcv_syn_closing_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9093,12 +10611,14 @@ rcv_syn_closing_outside_right_insecure_ipv6_head() {
 }
 rcv_syn_closing_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_closing_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_right_secure_ipv4 cleanup
 rcv_syn_closing_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -9106,12 +10626,14 @@ rcv_syn_closing_outside_right_secure_ipv4_head() {
 }
 rcv_syn_closing_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-secure-ipv4.pkt
 }
 rcv_syn_closing_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_outside_right_secure_ipv6 cleanup
 rcv_syn_closing_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -9119,12 +10641,14 @@ rcv_syn_closing_outside_right_secure_ipv6_head() {
 }
 rcv_syn_closing_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-outside-right-secure-ipv6.pkt
 }
 rcv_syn_closing_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_right_edge_insecure_ipv4 cleanup
 rcv_syn_closing_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9132,12 +10656,14 @@ rcv_syn_closing_right_edge_insecure_ipv4_head() {
 }
 rcv_syn_closing_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_closing_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_right_edge_insecure_ipv6 cleanup
 rcv_syn_closing_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9145,12 +10671,14 @@ rcv_syn_closing_right_edge_insecure_ipv6_head() {
 }
 rcv_syn_closing_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_closing_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_right_edge_secure_ipv4 cleanup
 rcv_syn_closing_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9158,12 +10686,14 @@ rcv_syn_closing_right_edge_secure_ipv4_head() {
 }
 rcv_syn_closing_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-secure-ipv4.pkt
 }
 rcv_syn_closing_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_closing_right_edge_secure_ipv6 cleanup
 rcv_syn_closing_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9171,12 +10701,14 @@ rcv_syn_closing_right_edge_secure_ipv6_head() {
 }
 rcv_syn_closing_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-closing/rcv-syn-closing-right-edge-secure-ipv6.pkt
 }
 rcv_syn_closing_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_left_edge_insecure_ipv4 cleanup
 rcv_syn_established_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9184,12 +10716,14 @@ rcv_syn_established_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_established_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_established_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_left_edge_insecure_ipv6 cleanup
 rcv_syn_established_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9197,12 +10731,14 @@ rcv_syn_established_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_established_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_established_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_left_edge_secure_ipv4 cleanup
 rcv_syn_established_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9210,12 +10746,14 @@ rcv_syn_established_left_edge_secure_ipv4_head() {
 }
 rcv_syn_established_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-secure-ipv4.pkt
 }
 rcv_syn_established_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_left_edge_secure_ipv6 cleanup
 rcv_syn_established_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9223,12 +10761,14 @@ rcv_syn_established_left_edge_secure_ipv6_head() {
 }
 rcv_syn_established_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-left-edge-secure-ipv6.pkt
 }
 rcv_syn_established_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_left_insecure_ipv4 cleanup
 rcv_syn_established_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9236,12 +10776,14 @@ rcv_syn_established_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_established_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_established_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_left_insecure_ipv6 cleanup
 rcv_syn_established_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9249,12 +10791,14 @@ rcv_syn_established_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_established_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_established_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_left_secure_ipv4 cleanup
 rcv_syn_established_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -9262,12 +10806,14 @@ rcv_syn_established_outside_left_secure_ipv4_head() {
 }
 rcv_syn_established_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-secure-ipv4.pkt
 }
 rcv_syn_established_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_left_secure_ipv6 cleanup
 rcv_syn_established_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -9275,12 +10821,14 @@ rcv_syn_established_outside_left_secure_ipv6_head() {
 }
 rcv_syn_established_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-left-secure-ipv6.pkt
 }
 rcv_syn_established_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_right_insecure_ipv4 cleanup
 rcv_syn_established_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9288,12 +10836,14 @@ rcv_syn_established_outside_right_insecure_ipv4_head() {
 }
 rcv_syn_established_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_established_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_right_insecure_ipv6 cleanup
 rcv_syn_established_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9301,12 +10851,14 @@ rcv_syn_established_outside_right_insecure_ipv6_head() {
 }
 rcv_syn_established_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_established_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_right_secure_ipv4 cleanup
 rcv_syn_established_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -9314,12 +10866,14 @@ rcv_syn_established_outside_right_secure_ipv4_head() {
 }
 rcv_syn_established_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-secure-ipv4.pkt
 }
 rcv_syn_established_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_outside_right_secure_ipv6 cleanup
 rcv_syn_established_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -9327,12 +10881,14 @@ rcv_syn_established_outside_right_secure_ipv6_head() {
 }
 rcv_syn_established_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-outside-right-secure-ipv6.pkt
 }
 rcv_syn_established_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_right_edge_insecure_ipv4 cleanup
 rcv_syn_established_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9340,12 +10896,14 @@ rcv_syn_established_right_edge_insecure_ipv4_head() {
 }
 rcv_syn_established_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_established_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_right_edge_insecure_ipv6 cleanup
 rcv_syn_established_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9353,12 +10911,14 @@ rcv_syn_established_right_edge_insecure_ipv6_head() {
 }
 rcv_syn_established_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_established_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_right_edge_secure_ipv4 cleanup
 rcv_syn_established_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9366,12 +10926,14 @@ rcv_syn_established_right_edge_secure_ipv4_head() {
 }
 rcv_syn_established_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-secure-ipv4.pkt
 }
 rcv_syn_established_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_established_right_edge_secure_ipv6 cleanup
 rcv_syn_established_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9379,12 +10941,14 @@ rcv_syn_established_right_edge_secure_ipv6_head() {
 }
 rcv_syn_established_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-established/rcv-syn-established-right-edge-secure-ipv6.pkt
 }
 rcv_syn_established_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_closed_ipv4 cleanup
 rcv_syn_fin_with_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -9392,12 +10956,14 @@ rcv_syn_fin_with_data_closed_ipv4_head() {
 }
 rcv_syn_fin_with_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-with-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-with-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-with-data-closed-ipv4.pkt
 }
 rcv_syn_fin_with_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_closed_ipv6 cleanup
 rcv_syn_fin_with_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -9405,12 +10971,14 @@ rcv_syn_fin_with_data_closed_ipv6_head() {
 }
 rcv_syn_fin_with_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-with-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-with-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-with-data-closed-ipv6.pkt
 }
 rcv_syn_fin_with_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_closed_ipv4 cleanup
 rcv_syn_fin_without_data_closed_ipv4_head() {
     atf_set timeout 10
@@ -9418,12 +10986,14 @@ rcv_syn_fin_without_data_closed_ipv4_head() {
 }
 rcv_syn_fin_without_data_closed_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-without-data-closed-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-without-data-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-without-data-closed-ipv4.pkt
 }
 rcv_syn_fin_without_data_closed_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_closed_ipv6 cleanup
 rcv_syn_fin_without_data_closed_ipv6_head() {
     atf_set timeout 10
@@ -9431,12 +11001,14 @@ rcv_syn_fin_without_data_closed_ipv6_head() {
 }
 rcv_syn_fin_without_data_closed_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-without-data-closed-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-without-data-closed-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-closed/rcv-syn-fin-without-data-closed-ipv6.pkt
 }
 rcv_syn_fin_without_data_closed_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_listen_dropping_disabled_ipv4 cleanup
 rcv_syn_fin_with_data_listen_dropping_disabled_ipv4_head() {
     atf_set timeout 10
@@ -9444,12 +11016,14 @@ rcv_syn_fin_with_data_listen_dropping_disabled_ipv4_head() {
 }
 rcv_syn_fin_with_data_listen_dropping_disabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-disabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-disabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-disabled-ipv4.pkt
 }
 rcv_syn_fin_with_data_listen_dropping_disabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_listen_dropping_disabled_ipv6 cleanup
 rcv_syn_fin_with_data_listen_dropping_disabled_ipv6_head() {
     atf_set timeout 10
@@ -9457,12 +11031,14 @@ rcv_syn_fin_with_data_listen_dropping_disabled_ipv6_head() {
 }
 rcv_syn_fin_with_data_listen_dropping_disabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-disabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-disabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-disabled-ipv6.pkt
 }
 rcv_syn_fin_with_data_listen_dropping_disabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_listen_dropping_enabled_ipv4 cleanup
 rcv_syn_fin_with_data_listen_dropping_enabled_ipv4_head() {
     atf_set timeout 10
@@ -9470,12 +11046,14 @@ rcv_syn_fin_with_data_listen_dropping_enabled_ipv4_head() {
 }
 rcv_syn_fin_with_data_listen_dropping_enabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-enabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-enabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-enabled-ipv4.pkt
 }
 rcv_syn_fin_with_data_listen_dropping_enabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_listen_dropping_enabled_ipv6 cleanup
 rcv_syn_fin_with_data_listen_dropping_enabled_ipv6_head() {
     atf_set timeout 10
@@ -9483,12 +11061,14 @@ rcv_syn_fin_with_data_listen_dropping_enabled_ipv6_head() {
 }
 rcv_syn_fin_with_data_listen_dropping_enabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-enabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-enabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-with-data-listen-dropping-enabled-ipv6.pkt
 }
 rcv_syn_fin_with_data_listen_dropping_enabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_listen_dropping_disabled_ipv4 cleanup
 rcv_syn_fin_without_data_listen_dropping_disabled_ipv4_head() {
     atf_set timeout 10
@@ -9496,12 +11076,14 @@ rcv_syn_fin_without_data_listen_dropping_disabled_ipv4_head() {
 }
 rcv_syn_fin_without_data_listen_dropping_disabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-disabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-disabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-disabled-ipv4.pkt
 }
 rcv_syn_fin_without_data_listen_dropping_disabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_listen_dropping_disabled_ipv6 cleanup
 rcv_syn_fin_without_data_listen_dropping_disabled_ipv6_head() {
     atf_set timeout 10
@@ -9509,12 +11091,14 @@ rcv_syn_fin_without_data_listen_dropping_disabled_ipv6_head() {
 }
 rcv_syn_fin_without_data_listen_dropping_disabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-disabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-disabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-disabled-ipv6.pkt
 }
 rcv_syn_fin_without_data_listen_dropping_disabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_listen_dropping_enabled_ipv4 cleanup
 rcv_syn_fin_without_data_listen_dropping_enabled_ipv4_head() {
     atf_set timeout 10
@@ -9522,12 +11106,14 @@ rcv_syn_fin_without_data_listen_dropping_enabled_ipv4_head() {
 }
 rcv_syn_fin_without_data_listen_dropping_enabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-enabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-enabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-enabled-ipv4.pkt
 }
 rcv_syn_fin_without_data_listen_dropping_enabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_listen_dropping_enabled_ipv6 cleanup
 rcv_syn_fin_without_data_listen_dropping_enabled_ipv6_head() {
     atf_set timeout 10
@@ -9535,12 +11121,14 @@ rcv_syn_fin_without_data_listen_dropping_enabled_ipv6_head() {
 }
 rcv_syn_fin_without_data_listen_dropping_enabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-enabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-enabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-listen/rcv-syn-fin-without-data-listen-dropping-enabled-ipv6.pkt
 }
 rcv_syn_fin_without_data_listen_dropping_enabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv4 cleanup
 rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv4_head() {
     atf_set timeout 10
@@ -9548,12 +11136,14 @@ rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv4_head() {
 }
 rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-disabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-disabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-disabled-ipv4.pkt
 }
 rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv6 cleanup
 rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv6_head() {
     atf_set timeout 10
@@ -9561,12 +11151,14 @@ rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv6_head() {
 }
 rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-disabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-disabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-disabled-ipv6.pkt
 }
 rcv_syn_fin_with_data_syn_sent_dropping_disabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv4 cleanup
 rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv4_head() {
     atf_set timeout 10
@@ -9574,12 +11166,14 @@ rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv4_head() {
 }
 rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-enabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-enabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-enabled-ipv4.pkt
 }
 rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv6 cleanup
 rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv6_head() {
     atf_set timeout 10
@@ -9587,12 +11181,14 @@ rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv6_head() {
 }
 rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-enabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-enabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-with-data-syn-sent-dropping-enabled-ipv6.pkt
 }
 rcv_syn_fin_with_data_syn_sent_dropping_enabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv4 cleanup
 rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv4_head() {
     atf_set timeout 10
@@ -9600,12 +11196,14 @@ rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv4_head() {
 }
 rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-disabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-disabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-disabled-ipv4.pkt
 }
 rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv6 cleanup
 rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv6_head() {
     atf_set timeout 10
@@ -9613,12 +11211,14 @@ rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv6_head() {
 }
 rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-disabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-disabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-disabled-ipv6.pkt
 }
 rcv_syn_fin_without_data_syn_sent_dropping_disabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv4 cleanup
 rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv4_head() {
     atf_set timeout 10
@@ -9626,12 +11226,14 @@ rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv4_head() {
 }
 rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-enabled-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-enabled-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-enabled-ipv4.pkt
 }
 rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv6 cleanup
 rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv6_head() {
     atf_set timeout 10
@@ -9639,12 +11241,14 @@ rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv6_head() {
 }
 rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-enabled-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-enabled-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-syn-sent/rcv-syn-fin-without-data-syn-sent-dropping-enabled-ipv6.pkt
 }
 rcv_syn_fin_without_data_syn_sent_dropping_enabled_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_left_edge_insecure_ipv4 cleanup
 rcv_syn_fin_wait_1_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9652,12 +11256,14 @@ rcv_syn_fin_wait_1_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_left_edge_insecure_ipv6 cleanup
 rcv_syn_fin_wait_1_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9665,12 +11271,14 @@ rcv_syn_fin_wait_1_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_left_edge_secure_ipv4 cleanup
 rcv_syn_fin_wait_1_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9678,12 +11286,14 @@ rcv_syn_fin_wait_1_left_edge_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_left_edge_secure_ipv6 cleanup
 rcv_syn_fin_wait_1_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9691,12 +11301,14 @@ rcv_syn_fin_wait_1_left_edge_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-left-edge-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_left_insecure_ipv4 cleanup
 rcv_syn_fin_wait_1_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9704,12 +11316,14 @@ rcv_syn_fin_wait_1_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_left_insecure_ipv6 cleanup
 rcv_syn_fin_wait_1_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9717,12 +11331,14 @@ rcv_syn_fin_wait_1_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_left_secure_ipv4 cleanup
 rcv_syn_fin_wait_1_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -9730,12 +11346,14 @@ rcv_syn_fin_wait_1_outside_left_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_left_secure_ipv6 cleanup
 rcv_syn_fin_wait_1_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -9743,12 +11361,14 @@ rcv_syn_fin_wait_1_outside_left_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-left-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_right_insecure_ipv4 cleanup
 rcv_syn_fin_wait_1_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9756,12 +11376,14 @@ rcv_syn_fin_wait_1_outside_right_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_right_insecure_ipv6 cleanup
 rcv_syn_fin_wait_1_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9769,12 +11391,14 @@ rcv_syn_fin_wait_1_outside_right_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_right_secure_ipv4 cleanup
 rcv_syn_fin_wait_1_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -9782,12 +11406,14 @@ rcv_syn_fin_wait_1_outside_right_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_outside_right_secure_ipv6 cleanup
 rcv_syn_fin_wait_1_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -9795,12 +11421,14 @@ rcv_syn_fin_wait_1_outside_right_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-outside-right-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_right_edge_insecure_ipv4 cleanup
 rcv_syn_fin_wait_1_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9808,12 +11436,14 @@ rcv_syn_fin_wait_1_right_edge_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_right_edge_insecure_ipv6 cleanup
 rcv_syn_fin_wait_1_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9821,12 +11451,14 @@ rcv_syn_fin_wait_1_right_edge_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_right_edge_secure_ipv4 cleanup
 rcv_syn_fin_wait_1_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9834,12 +11466,14 @@ rcv_syn_fin_wait_1_right_edge_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_1_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_1_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_1_right_edge_secure_ipv6 cleanup
 rcv_syn_fin_wait_1_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9847,12 +11481,14 @@ rcv_syn_fin_wait_1_right_edge_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_1_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-1/rcv-syn-fin-wait-1-right-edge-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_1_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_left_edge_insecure_ipv4 cleanup
 rcv_syn_fin_wait_2_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9860,12 +11496,14 @@ rcv_syn_fin_wait_2_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_left_edge_insecure_ipv6 cleanup
 rcv_syn_fin_wait_2_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9873,12 +11511,14 @@ rcv_syn_fin_wait_2_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_left_edge_secure_ipv4 cleanup
 rcv_syn_fin_wait_2_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -9886,12 +11526,14 @@ rcv_syn_fin_wait_2_left_edge_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_left_edge_secure_ipv6 cleanup
 rcv_syn_fin_wait_2_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -9899,12 +11541,14 @@ rcv_syn_fin_wait_2_left_edge_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-left-edge-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_left_insecure_ipv4 cleanup
 rcv_syn_fin_wait_2_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9912,12 +11556,14 @@ rcv_syn_fin_wait_2_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_left_insecure_ipv6 cleanup
 rcv_syn_fin_wait_2_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9925,12 +11571,14 @@ rcv_syn_fin_wait_2_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_left_secure_ipv4 cleanup
 rcv_syn_fin_wait_2_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -9938,12 +11586,14 @@ rcv_syn_fin_wait_2_outside_left_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_left_secure_ipv6 cleanup
 rcv_syn_fin_wait_2_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -9951,12 +11601,14 @@ rcv_syn_fin_wait_2_outside_left_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-left-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_right_insecure_ipv4 cleanup
 rcv_syn_fin_wait_2_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -9964,12 +11616,14 @@ rcv_syn_fin_wait_2_outside_right_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_right_insecure_ipv6 cleanup
 rcv_syn_fin_wait_2_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -9977,12 +11631,14 @@ rcv_syn_fin_wait_2_outside_right_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_right_secure_ipv4 cleanup
 rcv_syn_fin_wait_2_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -9990,12 +11646,14 @@ rcv_syn_fin_wait_2_outside_right_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_outside_right_secure_ipv6 cleanup
 rcv_syn_fin_wait_2_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -10003,12 +11661,14 @@ rcv_syn_fin_wait_2_outside_right_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-outside-right-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_right_edge_insecure_ipv4 cleanup
 rcv_syn_fin_wait_2_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10016,12 +11676,14 @@ rcv_syn_fin_wait_2_right_edge_insecure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_right_edge_insecure_ipv6 cleanup
 rcv_syn_fin_wait_2_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10029,12 +11691,14 @@ rcv_syn_fin_wait_2_right_edge_insecure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_right_edge_secure_ipv4 cleanup
 rcv_syn_fin_wait_2_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -10042,12 +11706,14 @@ rcv_syn_fin_wait_2_right_edge_secure_ipv4_head() {
 }
 rcv_syn_fin_wait_2_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-secure-ipv4.pkt
 }
 rcv_syn_fin_wait_2_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_fin_wait_2_right_edge_secure_ipv6 cleanup
 rcv_syn_fin_wait_2_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -10055,12 +11721,14 @@ rcv_syn_fin_wait_2_right_edge_secure_ipv6_head() {
 }
 rcv_syn_fin_wait_2_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-fin-wait-2/rcv-syn-fin-wait-2-right-edge-secure-ipv6.pkt
 }
 rcv_syn_fin_wait_2_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_left_edge_insecure_ipv4 cleanup
 rcv_syn_last_ack_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10068,12 +11736,14 @@ rcv_syn_last_ack_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_last_ack_left_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_last_ack_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_left_edge_insecure_ipv6 cleanup
 rcv_syn_last_ack_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10081,12 +11751,14 @@ rcv_syn_last_ack_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_last_ack_left_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_last_ack_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_left_edge_secure_ipv4 cleanup
 rcv_syn_last_ack_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -10094,12 +11766,14 @@ rcv_syn_last_ack_left_edge_secure_ipv4_head() {
 }
 rcv_syn_last_ack_left_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-secure-ipv4.pkt
 }
 rcv_syn_last_ack_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_left_edge_secure_ipv6 cleanup
 rcv_syn_last_ack_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -10107,12 +11781,14 @@ rcv_syn_last_ack_left_edge_secure_ipv6_head() {
 }
 rcv_syn_last_ack_left_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-left-edge-secure-ipv6.pkt
 }
 rcv_syn_last_ack_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_left_insecure_ipv4 cleanup
 rcv_syn_last_ack_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10120,12 +11796,14 @@ rcv_syn_last_ack_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_last_ack_outside_left_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_last_ack_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_left_insecure_ipv6 cleanup
 rcv_syn_last_ack_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10133,12 +11811,14 @@ rcv_syn_last_ack_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_last_ack_outside_left_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_last_ack_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_left_secure_ipv4 cleanup
 rcv_syn_last_ack_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -10146,12 +11826,14 @@ rcv_syn_last_ack_outside_left_secure_ipv4_head() {
 }
 rcv_syn_last_ack_outside_left_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-secure-ipv4.pkt
 }
 rcv_syn_last_ack_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_left_secure_ipv6 cleanup
 rcv_syn_last_ack_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -10159,12 +11841,14 @@ rcv_syn_last_ack_outside_left_secure_ipv6_head() {
 }
 rcv_syn_last_ack_outside_left_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-left-secure-ipv6.pkt
 }
 rcv_syn_last_ack_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_right_insecure_ipv4 cleanup
 rcv_syn_last_ack_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10172,12 +11856,14 @@ rcv_syn_last_ack_outside_right_insecure_ipv4_head() {
 }
 rcv_syn_last_ack_outside_right_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_last_ack_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_right_insecure_ipv6 cleanup
 rcv_syn_last_ack_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10185,12 +11871,14 @@ rcv_syn_last_ack_outside_right_insecure_ipv6_head() {
 }
 rcv_syn_last_ack_outside_right_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_last_ack_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_right_secure_ipv4 cleanup
 rcv_syn_last_ack_outside_right_secure_ipv4_head() {
     atf_set timeout 10
@@ -10198,12 +11886,14 @@ rcv_syn_last_ack_outside_right_secure_ipv4_head() {
 }
 rcv_syn_last_ack_outside_right_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-secure-ipv4.pkt
 }
 rcv_syn_last_ack_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_outside_right_secure_ipv6 cleanup
 rcv_syn_last_ack_outside_right_secure_ipv6_head() {
     atf_set timeout 10
@@ -10211,12 +11901,14 @@ rcv_syn_last_ack_outside_right_secure_ipv6_head() {
 }
 rcv_syn_last_ack_outside_right_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-outside-right-secure-ipv6.pkt
 }
 rcv_syn_last_ack_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_right_edge_insecure_ipv4 cleanup
 rcv_syn_last_ack_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10224,12 +11916,14 @@ rcv_syn_last_ack_right_edge_insecure_ipv4_head() {
 }
 rcv_syn_last_ack_right_edge_insecure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_last_ack_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_right_edge_insecure_ipv6 cleanup
 rcv_syn_last_ack_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10237,12 +11931,14 @@ rcv_syn_last_ack_right_edge_insecure_ipv6_head() {
 }
 rcv_syn_last_ack_right_edge_insecure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_last_ack_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_right_edge_secure_ipv4 cleanup
 rcv_syn_last_ack_right_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -10250,12 +11946,14 @@ rcv_syn_last_ack_right_edge_secure_ipv4_head() {
 }
 rcv_syn_last_ack_right_edge_secure_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-secure-ipv4.pkt
 }
 rcv_syn_last_ack_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_last_ack_right_edge_secure_ipv6 cleanup
 rcv_syn_last_ack_right_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -10263,12 +11961,14 @@ rcv_syn_last_ack_right_edge_secure_ipv6_head() {
 }
 rcv_syn_last_ack_right_edge_secure_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-last-ack/rcv-syn-last-ack-right-edge-secure-ipv6.pkt
 }
 rcv_syn_last_ack_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_with_data_listen_ipv4 cleanup
 rcv_syn_with_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -10276,12 +11976,14 @@ rcv_syn_with_data_listen_ipv4_head() {
 }
 rcv_syn_with_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-with-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-with-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-with-data-listen-ipv4.pkt
 }
 rcv_syn_with_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_with_data_listen_ipv6 cleanup
 rcv_syn_with_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -10289,12 +11991,14 @@ rcv_syn_with_data_listen_ipv6_head() {
 }
 rcv_syn_with_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-with-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-with-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-with-data-listen-ipv6.pkt
 }
 rcv_syn_with_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_without_data_listen_ipv4 cleanup
 rcv_syn_without_data_listen_ipv4_head() {
     atf_set timeout 10
@@ -10302,12 +12006,14 @@ rcv_syn_without_data_listen_ipv4_head() {
 }
 rcv_syn_without_data_listen_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-without-data-listen-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-without-data-listen-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-without-data-listen-ipv4.pkt
 }
 rcv_syn_without_data_listen_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_without_data_listen_ipv6 cleanup
 rcv_syn_without_data_listen_ipv6_head() {
     atf_set timeout 10
@@ -10315,12 +12021,14 @@ rcv_syn_without_data_listen_ipv6_head() {
 }
 rcv_syn_without_data_listen_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-without-data-listen-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-without-data-listen-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-listen/rcv-syn-without-data-listen-ipv6.pkt
 }
 rcv_syn_without_data_listen_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_with_data_syn_sent_ipv4 cleanup
 rcv_syn_with_data_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -10328,12 +12036,14 @@ rcv_syn_with_data_syn_sent_ipv4_head() {
 }
 rcv_syn_with_data_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-with-data-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-with-data-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-with-data-syn-sent-ipv4.pkt
 }
 rcv_syn_with_data_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_with_data_syn_sent_ipv6 cleanup
 rcv_syn_with_data_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -10341,12 +12051,14 @@ rcv_syn_with_data_syn_sent_ipv6_head() {
 }
 rcv_syn_with_data_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-with-data-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-with-data-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-with-data-syn-sent-ipv6.pkt
 }
 rcv_syn_with_data_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_without_data_syn_sent_ipv4 cleanup
 rcv_syn_without_data_syn_sent_ipv4_head() {
     atf_set timeout 10
@@ -10354,12 +12066,14 @@ rcv_syn_without_data_syn_sent_ipv4_head() {
 }
 rcv_syn_without_data_syn_sent_ipv4_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-without-data-syn-sent-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-without-data-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-without-data-syn-sent-ipv4.pkt
 }
 rcv_syn_without_data_syn_sent_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_without_data_syn_sent_ipv6 cleanup
 rcv_syn_without_data_syn_sent_ipv6_head() {
     atf_set timeout 10
@@ -10367,12 +12081,14 @@ rcv_syn_without_data_syn_sent_ipv6_head() {
 }
 rcv_syn_without_data_syn_sent_ipv6_body() {
     
+    
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-without-data-syn-sent-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-without-data-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-syn-sent/rcv-syn-without-data-syn-sent-ipv6.pkt
 }
 rcv_syn_without_data_syn_sent_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_left_edge_insecure_ipv4 cleanup
 rcv_syn_time_wait_left_edge_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10380,12 +12096,14 @@ rcv_syn_time_wait_left_edge_insecure_ipv4_head() {
 }
 rcv_syn_time_wait_left_edge_insecure_ipv4_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-insecure-ipv4.pkt
 }
 rcv_syn_time_wait_left_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_left_edge_insecure_ipv6 cleanup
 rcv_syn_time_wait_left_edge_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10393,12 +12111,14 @@ rcv_syn_time_wait_left_edge_insecure_ipv6_head() {
 }
 rcv_syn_time_wait_left_edge_insecure_ipv6_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-insecure-ipv6.pkt
 }
 rcv_syn_time_wait_left_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_left_edge_secure_ipv4 cleanup
 rcv_syn_time_wait_left_edge_secure_ipv4_head() {
     atf_set timeout 10
@@ -10406,12 +12126,14 @@ rcv_syn_time_wait_left_edge_secure_ipv4_head() {
 }
 rcv_syn_time_wait_left_edge_secure_ipv4_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-secure-ipv4.pkt
 }
 rcv_syn_time_wait_left_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_left_edge_secure_ipv6 cleanup
 rcv_syn_time_wait_left_edge_secure_ipv6_head() {
     atf_set timeout 10
@@ -10419,12 +12141,14 @@ rcv_syn_time_wait_left_edge_secure_ipv6_head() {
 }
 rcv_syn_time_wait_left_edge_secure_ipv6_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-left-edge-secure-ipv6.pkt
 }
 rcv_syn_time_wait_left_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_left_insecure_ipv4 cleanup
 rcv_syn_time_wait_outside_left_insecure_ipv4_head() {
     atf_set timeout 10
@@ -10432,12 +12156,14 @@ rcv_syn_time_wait_outside_left_insecure_ipv4_head() {
 }
 rcv_syn_time_wait_outside_left_insecure_ipv4_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-insecure-ipv4.pkt
 }
 rcv_syn_time_wait_outside_left_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_left_insecure_ipv6 cleanup
 rcv_syn_time_wait_outside_left_insecure_ipv6_head() {
     atf_set timeout 10
@@ -10445,12 +12171,14 @@ rcv_syn_time_wait_outside_left_insecure_ipv6_head() {
 }
 rcv_syn_time_wait_outside_left_insecure_ipv6_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-insecure-ipv6.pkt
 }
 rcv_syn_time_wait_outside_left_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_left_secure_ipv4 cleanup
 rcv_syn_time_wait_outside_left_secure_ipv4_head() {
     atf_set timeout 10
@@ -10458,12 +12186,14 @@ rcv_syn_time_wait_outside_left_secure_ipv4_head() {
 }
 rcv_syn_time_wait_outside_left_secure_ipv4_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-secure-ipv4.pkt
 }
 rcv_syn_time_wait_outside_left_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_left_secure_ipv6 cleanup
 rcv_syn_time_wait_outside_left_secure_ipv6_head() {
     atf_set timeout 10
@@ -10471,116 +12201,974 @@ rcv_syn_time_wait_outside_left_secure_ipv6_head() {
 }
 rcv_syn_time_wait_outside_left_secure_ipv6_body() {
     
+    atf_expect_timeout "FreeBSD intentionally does not follow the specification."
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-left-secure-ipv6.pkt
 }
 rcv_syn_time_wait_outside_left_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_right_insecure_ipv4 cleanup
 rcv_syn_time_wait_outside_right_insecure_ipv4_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_outside_right_insecure_ipv4_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-insecure-ipv4.pkt
 }
 rcv_syn_time_wait_outside_right_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_right_insecure_ipv6 cleanup
 rcv_syn_time_wait_outside_right_insecure_ipv6_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_outside_right_insecure_ipv6_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-insecure-ipv6.pkt
 }
 rcv_syn_time_wait_outside_right_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_right_secure_ipv4 cleanup
 rcv_syn_time_wait_outside_right_secure_ipv4_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_outside_right_secure_ipv4_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-secure-ipv4.pkt
 }
 rcv_syn_time_wait_outside_right_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_outside_right_secure_ipv6 cleanup
 rcv_syn_time_wait_outside_right_secure_ipv6_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_outside_right_secure_ipv6_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-outside-right-secure-ipv6.pkt
 }
 rcv_syn_time_wait_outside_right_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_right_edge_insecure_ipv4 cleanup
 rcv_syn_time_wait_right_edge_insecure_ipv4_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_right_edge_insecure_ipv4_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-insecure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-insecure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-insecure-ipv4.pkt
 }
 rcv_syn_time_wait_right_edge_insecure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_right_edge_insecure_ipv6 cleanup
 rcv_syn_time_wait_right_edge_insecure_ipv6_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_right_edge_insecure_ipv6_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-insecure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-insecure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-insecure-ipv6.pkt
 }
 rcv_syn_time_wait_right_edge_insecure_ipv6_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_right_edge_secure_ipv4 cleanup
 rcv_syn_time_wait_right_edge_secure_ipv4_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_right_edge_secure_ipv4_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-secure-ipv4.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-secure-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-secure-ipv4.pkt
 }
 rcv_syn_time_wait_right_edge_secure_ipv4_cleanup() {
     restore_sysctls
 }
+
 atf_test_case rcv_syn_time_wait_right_edge_secure_ipv6 cleanup
 rcv_syn_time_wait_right_edge_secure_ipv6_head() {
     atf_set timeout 10
     atf_set require.config allow_sysctl_side_effects
 }
 rcv_syn_time_wait_right_edge_secure_ipv6_body() {
+    atf_expect_fail "FreeBSD intentionally does not follow the specification."
     
     save_sysctls /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-secure-ipv6.pkt
-    atf_check -o ignore /usr/local/bin/packetdrill 	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-secure-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/state-event-engine/rcv-syn-time-wait/rcv-syn-time-wait-right-edge-secure-ipv6.pkt
 }
 rcv_syn_time_wait_right_edge_secure_ipv6_cleanup() {
     restore_sysctls
 }
+
+atf_test_case active_connection_setup_ipv4 cleanup
+active_connection_setup_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+active_connection_setup_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/active-connection-setup-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/active-connection-setup-ipv4.pkt
+}
+active_connection_setup_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case active_connection_setup_ipv6 cleanup
+active_connection_setup_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+active_connection_setup_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/active-connection-setup-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/active-connection-setup-ipv6.pkt
+}
+active_connection_setup_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case getsockopt_tcp_maxseg_established_ipv4 cleanup
+getsockopt_tcp_maxseg_established_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+getsockopt_tcp_maxseg_established_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/getsockopt-tcp-maxseg-established-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/getsockopt-tcp-maxseg-established-ipv4.pkt
+}
+getsockopt_tcp_maxseg_established_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case getsockopt_tcp_maxseg_established_ipv6 cleanup
+getsockopt_tcp_maxseg_established_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+getsockopt_tcp_maxseg_established_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/getsockopt-tcp-maxseg-established-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/getsockopt-tcp-maxseg-established-ipv6.pkt
+}
+getsockopt_tcp_maxseg_established_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case passive_connection_setup_ipv4 cleanup
+passive_connection_setup_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+passive_connection_setup_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/passive-connection-setup-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/passive-connection-setup-ipv4.pkt
+}
+passive_connection_setup_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case passive_connection_setup_ipv6 cleanup
+passive_connection_setup_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+passive_connection_setup_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/passive-connection-setup-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/passive-connection-setup-ipv6.pkt
+}
+passive_connection_setup_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_closing_ipv4 cleanup
+rcv_ack_closing_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_closing_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-closing-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-closing-ipv4.pkt
+}
+rcv_ack_closing_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_closing_ipv6 cleanup
+rcv_ack_closing_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_closing_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-closing-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-closing-ipv6.pkt
+}
+rcv_ack_closing_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_finwait_1_ipv4 cleanup
+rcv_ack_finwait_1_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_finwait_1_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-finwait-1-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-finwait-1-ipv4.pkt
+}
+rcv_ack_finwait_1_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_finwait_1_ipv6 cleanup
+rcv_ack_finwait_1_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_finwait_1_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-finwait-1-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-finwait-1-ipv6.pkt
+}
+rcv_ack_finwait_1_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_last_ack_ipv4 cleanup
+rcv_ack_last_ack_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_last_ack_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-last-ack-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-last-ack-ipv4.pkt
+}
+rcv_ack_last_ack_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_last_ack_ipv6 cleanup
+rcv_ack_last_ack_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_last_ack_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-last-ack-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-last-ack-ipv6.pkt
+}
+rcv_ack_last_ack_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_syn_rcvd_syn_cache_ipv4 cleanup
+rcv_ack_syn_rcvd_syn_cache_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_syn_rcvd_syn_cache_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cache-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cache-ipv4.pkt
+}
+rcv_ack_syn_rcvd_syn_cache_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_syn_rcvd_syn_cache_ipv6 cleanup
+rcv_ack_syn_rcvd_syn_cache_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_syn_rcvd_syn_cache_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cache-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cache-ipv6.pkt
+}
+rcv_ack_syn_rcvd_syn_cache_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_syn_rcvd_syn_cookie_ipv4 cleanup
+rcv_ack_syn_rcvd_syn_cookie_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_syn_rcvd_syn_cookie_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cookie-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cookie-ipv4.pkt
+}
+rcv_ack_syn_rcvd_syn_cookie_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_syn_rcvd_syn_cookie_ipv6 cleanup
+rcv_ack_syn_rcvd_syn_cookie_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_syn_rcvd_syn_cookie_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cookie-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-syn-cookie-ipv6.pkt
+}
+rcv_ack_syn_rcvd_syn_cookie_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_syn_rcvd_via_syn_sent_ipv4 cleanup
+rcv_ack_syn_rcvd_via_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_syn_rcvd_via_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-via-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-via-syn-sent-ipv4.pkt
+}
+rcv_ack_syn_rcvd_via_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_syn_rcvd_via_syn_sent_ipv6 cleanup
+rcv_ack_syn_rcvd_via_syn_sent_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_syn_rcvd_via_syn_sent_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-via-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-syn-rcvd-via-syn-sent-ipv6.pkt
+}
+rcv_ack_syn_rcvd_via_syn_sent_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_timewait_ipv4 cleanup
+rcv_ack_timewait_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_timewait_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-timewait-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-timewait-ipv4.pkt
+}
+rcv_ack_timewait_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_ack_timewait_ipv6 cleanup
+rcv_ack_timewait_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_ack_timewait_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-timewait-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-ack-timewait-ipv6.pkt
+}
+rcv_ack_timewait_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_estab_ipv4 cleanup
+rcv_fin_estab_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_estab_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-estab-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-estab-ipv4.pkt
+}
+rcv_fin_estab_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_estab_ipv6 cleanup
+rcv_fin_estab_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_estab_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-estab-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-estab-ipv6.pkt
+}
+rcv_fin_estab_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_finwait_1_ipv4 cleanup
+rcv_fin_finwait_1_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_finwait_1_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-1-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-1-ipv4.pkt
+}
+rcv_fin_finwait_1_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_finwait_1_ipv6 cleanup
+rcv_fin_finwait_1_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_finwait_1_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-1-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-1-ipv6.pkt
+}
+rcv_fin_finwait_1_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_finwait_2_ipv4 cleanup
+rcv_fin_finwait_2_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_finwait_2_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-2-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-2-ipv4.pkt
+}
+rcv_fin_finwait_2_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_finwait_2_ipv6 cleanup
+rcv_fin_finwait_2_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_finwait_2_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-2-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-finwait-2-ipv6.pkt
+}
+rcv_fin_finwait_2_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_timewait_ipv4 cleanup
+rcv_fin_timewait_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_timewait_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-timewait-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-timewait-ipv4.pkt
+}
+rcv_fin_timewait_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_fin_timewait_ipv6 cleanup
+rcv_fin_timewait_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_fin_timewait_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-timewait-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-fin-timewait-ipv6.pkt
+}
+rcv_fin_timewait_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_admin_prohibited_syn_sent_ipv6 cleanup
+rcv_icmp_admin_prohibited_syn_sent_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_admin_prohibited_syn_sent_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-admin-prohibited-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-admin-prohibited-syn-sent-ipv6.pkt
+}
+rcv_icmp_admin_prohibited_syn_sent_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_fragmentation_needed_established_ipv4 cleanup
+rcv_icmp_fragmentation_needed_established_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_fragmentation_needed_established_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-fragmentation-needed-established-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-fragmentation-needed-established-ipv4.pkt
+}
+rcv_icmp_fragmentation_needed_established_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_host_prohibited_syn_sent_ipv4 cleanup
+rcv_icmp_host_prohibited_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_host_prohibited_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-host-prohibited-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-host-prohibited-syn-sent-ipv4.pkt
+}
+rcv_icmp_host_prohibited_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_net_prohibited_syn_sent_ipv4 cleanup
+rcv_icmp_net_prohibited_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_net_prohibited_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-net-prohibited-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-net-prohibited-syn-sent-ipv4.pkt
+}
+rcv_icmp_net_prohibited_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_packet_too_big_established_ipv6 cleanup
+rcv_icmp_packet_too_big_established_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_packet_too_big_established_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-packet-too-big-established-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-packet-too-big-established-ipv6.pkt
+}
+rcv_icmp_packet_too_big_established_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_port_unreachable_syn_sent_ipv4 cleanup
+rcv_icmp_port_unreachable_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_port_unreachable_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-port-unreachable-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-port-unreachable-syn-sent-ipv4.pkt
+}
+rcv_icmp_port_unreachable_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_icmp_port_unreachable_syn_sent_ipv6 cleanup
+rcv_icmp_port_unreachable_syn_sent_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_icmp_port_unreachable_syn_sent_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-port-unreachable-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-icmp-port-unreachable-syn-sent-ipv6.pkt
+}
+rcv_icmp_port_unreachable_syn_sent_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_rst_encaps_syn_sent_ipv4 cleanup
+rcv_rst_encaps_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_rst_encaps_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-encaps-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-encaps-syn-sent-ipv4.pkt
+}
+rcv_rst_encaps_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_rst_encaps_syn_sent_ipv6 cleanup
+rcv_rst_encaps_syn_sent_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_rst_encaps_syn_sent_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-encaps-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-encaps-syn-sent-ipv6.pkt
+}
+rcv_rst_encaps_syn_sent_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_rst_plain_syn_sent_ipv4 cleanup
+rcv_rst_plain_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_rst_plain_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-plain-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-plain-syn-sent-ipv4.pkt
+}
+rcv_rst_plain_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_rst_plain_syn_sent_ipv6 cleanup
+rcv_rst_plain_syn_sent_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_rst_plain_syn_sent_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-plain-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-rst-plain-syn-sent-ipv6.pkt
+}
+rcv_rst_plain_syn_sent_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_syn_ack_syn_sent_ipv4 cleanup
+rcv_syn_ack_syn_sent_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_syn_ack_syn_sent_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-syn-ack-syn-sent-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-syn-ack-syn-sent-ipv4.pkt
+}
+rcv_syn_ack_syn_sent_ipv4_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_syn_ack_syn_sent_ipv6 cleanup
+rcv_syn_ack_syn_sent_ipv6_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_syn_ack_syn_sent_ipv6_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-syn-ack-syn-sent-ipv6.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/packetdrill --tun_dev=tun0 --persistent_tun_dev	        /usr/local/share/tcptestsuite/tcp-over-udp/rcv-syn-ack-syn-sent-ipv6.pkt
+}
+rcv_syn_ack_syn_sent_ipv6_cleanup() {
+    restore_sysctls
+}
+
+atf_test_case rcv_syn_closed_ipv4 cleanup
+rcv_syn_closed_ipv4_head() {
+    atf_set timeout 10
+    atf_set require.config allow_sysctl_side_effects
+}
+rcv_syn_closed_ipv4_body() {
+    
+    
+    save_sysctls /usr/local/share/tcptestsuite/tcp-over-udp/rcv-syn-closed-ipv4.pkt
+    atf_check -o ignore -e ignore /usr/local/share/tcptestsuite/double-check.sh	        /usr/local/bin/pac
author	Olivier Cochard <olivier@FreeBSD.org>	2022-04-20 16:11:05 +0000
committer	Olivier Cochard <olivier@FreeBSD.org>	2022-04-20 16:16:07 +0000
commit	db0468e5782643e9c43805c4a84daf9d54fd3f61 (patch)
tree	79640364687bbca428f7ef8ba2e82a67c2c5257b
parent	4e6dd2796563b6032e36604a77a12d71cd6935ae (diff)
download	ports-db0468e5782643e9c43805c4a84daf9d54fd3f61.tar.gz ports-db0468e5782643e9c43805c4a84daf9d54fd3f61.zip