From 88f657f13997e6a7902fae3afdfc39d20a63a24f Mon Sep 17 00:00:00 2001
From: christos <christos@NetBSD.org>
Date: Wed, 11 Jan 2017 18:25:46 +0000
Subject: [PATCH] Add KASSERT.

---
 sys/netinet6/in6.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index f978c8fa1137..78a9457310b3 100644
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: in6.c,v 1.231 2017/01/10 05:42:34 ozaki-r Exp $	*/
+/*	$NetBSD: in6.c,v 1.232 2017/01/11 18:25:46 christos Exp $	*/
 /*	$KAME: in6.c,v 1.198 2001/07/18 09:12:38 itojun Exp $	*/
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: in6.c,v 1.231 2017/01/10 05:42:34 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in6.c,v 1.232 2017/01/11 18:25:46 christos Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -1770,6 +1770,8 @@ in6ifa_ifpforlinklocal(const struct ifnet *ifp, const int ignoreflags)
 {
 	struct ifaddr *best_ifa = NULL, *ifa;
 
+	KASSERT(ifp != NULL);
+
 	IFADDR_READER_FOREACH(ifa, ifp) {
 		if (ifa->ifa_addr->sa_family != AF_INET6)
 			continue;