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author | qingli <qingli@FreeBSD.org> | 2009-09-05 16:50:55 +0000 |
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committer | qingli <qingli@FreeBSD.org> | 2009-09-05 16:50:55 +0000 |
commit | 831e6c957c53ed2e3528a47cc2ffe8cbff057ce8 (patch) | |
tree | f66e9b571279d22fb441c177cee4cabfb48b365f | |
parent | 0cca60c70d1c3115577b3e8fa7f015d4d9eb8904 (diff) | |
download | FreeBSD-src-831e6c957c53ed2e3528a47cc2ffe8cbff057ce8.zip FreeBSD-src-831e6c957c53ed2e3528a47cc2ffe8cbff057ce8.tar.gz |
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
MFC after: immediately
-rw-r--r-- | sys/netinet6/icmp6.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/netinet6/icmp6.c b/sys/netinet6/icmp6.c index 6f13c69..04810c3 100644 --- a/sys/netinet6/icmp6.c +++ b/sys/netinet6/icmp6.c @@ -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; |