Add -4/-6 shorthand for -finet/-finet6 in route(8) and netstat(8).

MFC after:	2 weeks

3 files changed, 44 insertions, 4 deletions

diff --git a/sbin/route/keywords b/sbin/route/keywords
index f3fd1d8e0058..bb0968b8b7f4 100644
--- a/sbin/route/keywords
+++ b/sbin/route/keywords
@@ -1,6 +1,8 @@
 #	@(#)keywords	8.2 (Berkeley) 3/19/94
 # $FreeBSD$
 
+4
+6
 add
 atalk
 blackhole
diff --git a/sbin/route/route.8 b/sbin/route/route.8
index ea41cb6c1dae..8906cf7a090a 100644
--- a/sbin/route/route.8
+++ b/sbin/route/route.8
@@ -62,6 +62,14 @@ programmatic interface discussed in
 .Pp
 The following options are available:
 .Bl -tag -width indent
+.It Fl 4
+Specify
+.Cm inet
+address family as family hint for subcommands.
+.It Fl 6
+Specify
+.Cm inet
+address family as family hint for subcommands.
 .It Fl d
 Run in debug-only mode, i.e., do not actually modify the routing table.
 .It Fl n
@@ -138,10 +146,20 @@ When the address family may is specified by any of the
 .Fl xns ,
 .Fl atalk ,
 .Fl inet6 ,
+.Fl 6,
+.Fl inet,
 or
-.Fl inet
+.Fl 4
 modifiers, only routes having destinations with addresses in the
-delineated family will be deleted.
+delineated family will be deleted. Additionally,
+.Fl 4
+or
+.Fl 6
+can be used as aliases for
+.Fl inet
+and
+.Fl inet6
+modifiers.
 When a
 .Fl fib
 option is specified, the operation will be applied to
diff --git a/sbin/route/route.c b/sbin/route/route.c
index 2a76932f68cc..d3be6b7dbeb3 100644
--- a/sbin/route/route.c
+++ b/sbin/route/route.c
@@ -154,7 +154,7 @@ usage(const char *cp)
 {
 	if (cp != NULL)
 		warnx("bad keyword: %s", cp);
-	errx(EX_USAGE, "usage: route [-dnqtv] command [[modifiers] args]");
+	errx(EX_USAGE, "usage: route [-46dnqtv] command [[modifiers] args]");
 	/* NOTREACHED */
 }
 
@@ -167,8 +167,24 @@ main(int argc, char **argv)
 	if (argc < 2)
 		usage(NULL);
 
-	while ((ch = getopt(argc, argv, "nqdtv")) != -1)
+	while ((ch = getopt(argc, argv, "46nqdtv")) != -1)
 		switch(ch) {
+		case '4':
+#ifdef INET
+			af = AF_INET;
+			aflen = sizeof(struct sockaddr_in);
+#else
+			errx(1, "IPv4 support is not compiled in");
+#endif
+			break;
+		case '6':
+#ifdef INET6
+			af = AF_INET6;
+			aflen = sizeof(struct sockaddr_in6);
+#else
+			errx(1, "IPv6 support is not compiled in");
+#endif
+			break;
 		case 'n':
 			nflag = 1;
 			break;
@@ -382,11 +398,13 @@ flushroutes(int argc, char *argv[])
 			usage(*argv);
 		switch (keyword(*argv + 1)) {
 #ifdef INET
+		case K_4:
 		case K_INET:
 			af = AF_INET;
 			break;
 #endif
 #ifdef INET6
+		case K_6:
 		case K_INET6:
 			af = AF_INET6;
 			break;
@@ -807,12 +825,14 @@ newroute(int argc, char **argv)
 				aflen = sizeof(struct sockaddr_dl);
 				break;
 #ifdef INET
+			case K_4:
 			case K_INET:
 				af = AF_INET;
 				aflen = sizeof(struct sockaddr_in);
 				break;
 #endif
 #ifdef INET6
+			case K_6:
 			case K_INET6:
 				af = AF_INET6;
 				aflen = sizeof(struct sockaddr_in6);