Author: qingli
Date: Sat Sep 5 17:35:31 2009
New Revision: 196868
URL: http://svn.freebsd.org/changeset/base/196868
Log:
MFC r196865
This patch fixes an address scope violation. Considering the
scenario where an anycast address is assigned on one interface,
and a global address with the same scope is assigned on another
interface. In other words, the interface owns the anycast
address has only the link-local address as one other address.
Without this patch, "ping6" the anycast address from another
station will observe the source address of the returned ICMP6
echo reply has the link-local address, not the global address
that exists on the other interface in the same node.
Reviewed by: bz
Approved by: re
Modified:
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)
stable/8/sys/dev/xen/xenpci/ (props changed)
stable/8/sys/netinet6/icmp6.c
Modified: stable/8/sys/netinet6/icmp6.c
==============================================================================
--- stable/8/sys/netinet6/icmp6.c Sat Sep 5 17:29:08 2009
(r196867)
+++ stable/8/sys/netinet6/icmp6.c Sat Sep 5 17:35:31 2009
(r196868)
@@ -2170,6 +2170,10 @@ icmp6_reflect(struct mbuf *m, size_t off
}
}
+ if ((srcp != NULL) &&
+ (in6_addrscope(srcp) != in6_addrscope(&ip6->ip6_src)))
+ srcp = NULL;
+
if (srcp == NULL) {
int e;
struct sockaddr_in6 sin6;
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