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From: Qing Li <qingli@FreeBSD.org>
Date: Mon, 10 Oct 2011 21:41:34 +0000 (UTC)
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Subject: svn commit: r226237 - stable/8/sys/netinet
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Author: qingli
Date: Mon Oct 10 21:41:34 2011
New Revision: 226237
URL: http://svn.freebsd.org/changeset/base/226237

Log:
  MFC 226114
  
  Remove the reference held on the loopback route when the interface
  address is being deleted. Only the last reference holder deletes the
  loopback route. All other delete operations just clear the IFA_RTSELF
  flag.
  
  PR:		kern/159601
  Submitted by:	pluknet
  Reviewed by:	discussed on net@

Modified:
  stable/8/sys/netinet/in.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)

Modified: stable/8/sys/netinet/in.c
==============================================================================
--- stable/8/sys/netinet/in.c	Mon Oct 10 21:38:19 2011	(r226236)
+++ stable/8/sys/netinet/in.c	Mon Oct 10 21:41:34 2011	(r226237)
@@ -1126,8 +1126,10 @@ in_scrubprefix(struct in_ifaddr *target,
 			RT_LOCK(ia_ro.ro_rt);
 			if (ia_ro.ro_rt->rt_refcnt <= 1)
 				freeit = 1;
-			else
+			else if (flags & LLE_STATIC) {
 				RT_REMREF(ia_ro.ro_rt);
+				target->ia_flags &= ~IFA_RTSELF;
+			}
 			RTFREE_LOCKED(ia_ro.ro_rt);
 		}
 		if (freeit && (flags & LLE_STATIC)) {