From 8d5a3ca77bc357a21ed5eed52084ac6eceeb6429 Mon Sep 17 00:00:00 2001
From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
Date: Wed, 25 May 2011 00:34:25 +0000
Subject: [PATCH] Add FEATURE() definitions for IPv4 and IPv6 so that we can
 use feature_present(3) to dynamically decide whether to use one or the other
 family.

Reviewed by:	gnn
Sponsored by:	The FreeBSD Foundation
Sponsored by:	iXsystems
MFC after:	10 days
---
 sys/netinet/in_proto.c   | 2 ++
 sys/netinet6/in6_proto.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/sys/netinet/in_proto.c b/sys/netinet/in_proto.c
index 2827c221e6e..d2a772f46c7 100644
--- a/sys/netinet/in_proto.c
+++ b/sys/netinet/in_proto.c
@@ -106,6 +106,8 @@ static struct pr_usrreqs nousrreqs;
 #include <net/if_pfsync.h>
 #endif
 
+FEATURE(inet, "Internet Protocol version 4");
+
 extern	struct domain inetdomain;
 
 /* Spacer for loadable protocols. */
diff --git a/sys/netinet6/in6_proto.c b/sys/netinet6/in6_proto.c
index acd156950fe..ab54755f02c 100644
--- a/sys/netinet6/in6_proto.c
+++ b/sys/netinet6/in6_proto.c
@@ -133,6 +133,7 @@ __FBSDID("$FreeBSD$");
 /*
  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
  */
+FEATURE(inet6, "Internet Protocol version 6");
 
 extern	struct domain inet6domain;
 static	struct pr_usrreqs nousrreqs;