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; Check if the prefetch option works properly for messages stored in the global
; cache for non-ECS clients. The prefetch query needs to result in an ECS
; outgoing query based on the client's IP.
server:
trust-anchor-signaling: no
target-fetch-policy: "0 0 0 0 0"
send-client-subnet: 1.2.3.4
max-client-subnet-ipv4: 21
module-config: "subnetcache iterator"
verbosity: 3
access-control: 127.0.0.1 allow_snoop
qname-minimisation: no
minimal-responses: no
prefetch: yes
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test prefetch option for global cache with ECS enabled
; K.ROOT-SERVERS.NET.
RANGE_BEGIN 0 100
ADDRESS 193.0.14.129
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
. IN NS
SECTION ANSWER
. IN NS K.ROOT-SERVERS.NET.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
K.ROOT-SERVERS.NET. IN A 193.0.14.129
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION AUTHORITY
com. IN NS a.gtld-servers.net.
SECTION ADDITIONAL
a.gtld-servers.net. IN A 192.5.6.30
ENTRY_END
RANGE_END
; a.gtld-servers.net.
RANGE_BEGIN 0 100
ADDRESS 192.5.6.30
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
com. IN NS
SECTION ANSWER
com. IN NS a.gtld-servers.net.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
a.gtld-servers.net. IN A 192.5.6.30
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 10
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
example.com. IN NS
SECTION ANSWER
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 11 100
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
example.com. IN NS
SECTION ANSWER
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_ednsdata_assume_clientsubnet
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.0.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
15 00 ; source mask, scopemask
7f 00 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; This answer should be in the global cache (because no ECS from upstream)
STEP 2 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
; Try to trigger a prefetch
STEP 3 TIME_PASSES ELAPSE 9
STEP 11 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; This record came from the global cache and a prefetch was triggered.
STEP 12 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ttl
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 1 IN A 10.20.30.40
SECTION AUTHORITY
example.com. 3591 IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. 3591 IN A 1.2.3.4
ENTRY_END
; Allow time to pass so that the global cache record is expired.
STEP 13 TIME_PASSES ELAPSE 2
; Query again to verify that the record was prefetched and stored in the ECS
; cache.
STEP 15 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; This record came from the ECS cache.
STEP 16 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ttl
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 8 IN A 10.20.30.40
SECTION AUTHORITY
example.com. 3598 IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. 3598 IN A 1.2.3.4
ENTRY_END
SCENARIO_END
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