svn commit: r225223 - head/sys/netinet

[Qing Li]

Author: qingli
Date: Sun Aug 28 00:14:40 2011
New Revision: 225223
URL: http://svn.freebsd.org/changeset/base/225223

Log:
  When an interface address route is removed from the system, another
  route with the same prefix is searched for as a replacement. The
  current code did not bypass routes that have non-operational
  interfaces. This patch fixes that bug and will find a replacement
  route with an active interface.
  
  PR:		kern/159603
  Submitted by:	pluknet, ambrisko at ambrisko dot com
  Reviewed by:	discussed on net@
  Approved by:	re (bz)
  MFC after:	3 days

Modified:
  head/sys/netinet/in.c

Modified: head/sys/netinet/in.c
==============================================================================
--- head/sys/netinet/in.c	Sat Aug 27 22:10:53 2011	(r225222)
+++ head/sys/netinet/in.c	Sun Aug 28 00:14:40 2011	(r225223)
@@ -1163,7 +1163,8 @@ in_scrubprefix(struct in_ifaddr *target,
 			p.s_addr &= ia->ia_sockmask.sin_addr.s_addr;
 		}
 
-		if (prefix.s_addr != p.s_addr)
+		if ((prefix.s_addr != p.s_addr) ||
+		    !(ia->ia_ifp->if_flags & IFF_UP))
 			continue;
 
 		/*