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From: Hiroki Sato <hrs@FreeBSD.org>
Date: Fri, 11 May 2012 19:26:55 +0000 (UTC)
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Subject: svn commit: r235284 - user/hrs/ipv6/sys/netinet6
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Author: hrs
Date: Fri May 11 19:26:54 2012
New Revision: 235284
URL: http://svn.freebsd.org/changeset/base/235284

Log:
  Fix a panic when if_afdata[AF_INET6] == NULL.

Modified:
  user/hrs/ipv6/sys/netinet6/nd6.c

Modified: user/hrs/ipv6/sys/netinet6/nd6.c
==============================================================================
--- user/hrs/ipv6/sys/netinet6/nd6.c	Fri May 11 19:15:33 2012	(r235283)
+++ user/hrs/ipv6/sys/netinet6/nd6.c	Fri May 11 19:26:54 2012	(r235284)
@@ -1803,6 +1803,8 @@ nd6_slowtimo(void *arg)
 	    nd6_slowtimo, curvnet);
 	IFNET_RLOCK_NOSLEEP();
 	TAILQ_FOREACH(ifp, &V_ifnet, if_list) {
+		if (ifp->if_afdata[AF_INET6] == NULL)
+			continue;
 		nd6if = ND_IFINFO(ifp);
 		if (nd6if->basereachable && /* already initialized */
 		    (nd6if->recalctm -= ND6_SLOWTIMER_INTERVAL) <= 0) {