Author: qingli
Date: Fri Oct 2 01:34:55 2009
New Revision: 197695
URL: http://svn.freebsd.org/changeset/base/197695
Log:
Previously, if an address alias is configured on an interface, and
this address alias has a prefix matching that of another address
configured on the same interface, then the ARP entry for the alias
is not deleted from the ARP table when that address alias is removed.
This patch fixes the aforementioned issue.
PR: kern/139113
MFC after: 3 days
Modified:
head/sys/netinet/in.c
Modified: head/sys/netinet/in.c
==============================================================================
--- head/sys/netinet/in.c Fri Oct 2 01:07:28 2009 (r197694)
+++ head/sys/netinet/in.c Fri Oct 2 01:34:55 2009 (r197695)
@@ -1060,6 +1060,8 @@ in_scrubprefix(struct in_ifaddr *target)
!(target->ia_ifp->if_flags & IFF_LOOPBACK)) {
error = ifa_del_loopback_route((struct ifaddr *)target,
(struct sockaddr *)&target->ia_addr);
+ /* remove arp cache */
+ arp_ifscrub(target->ia_ifp, IA_SIN(target)->sin_addr.s_addr);
}
if ((target->ia_flags & IFA_ROUTE) == 0) {
@@ -1082,8 +1084,6 @@ in_scrubprefix(struct in_ifaddr *target)
prefix = target->ia_addr.sin_addr;
mask = target->ia_sockmask.sin_addr;
prefix.s_addr &= mask.s_addr;
- /* remove arp cache */
- arp_ifscrub(target->ia_ifp, IA_SIN(target)->sin_addr.s_addr);
}
IN_IFADDR_RLOCK();
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