diff options
| author | Stefan Sperling <stsp@cvs.openbsd.org> | 2011-10-14 16:16:44 +0000 |
|---|---|---|
| committer | Stefan Sperling <stsp@cvs.openbsd.org> | 2011-10-14 16:16:44 +0000 |
| commit | 497ff727d1e9d4a929d85a98b17d08e0f26da87e (patch) | |
| tree | e5741896d28aa0080d0c1357b5c1a061dc4926a6 /sys/netinet6/nd6_nbr.c | |
| parent | 498643d81af3bb411b0e09da1ad82f8cd777ee46 (diff) | |
Prevent carp slaves from sending IPv6 neighbour advertisements for carp
addresses. Fixes "duplicate IP6 address" warnings, appearing since we started
accepting IPv6 neighbour discovery packets on carp interfaces.
ok henning
Diffstat (limited to 'sys/netinet6/nd6_nbr.c')
| -rw-r--r-- | sys/netinet6/nd6_nbr.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c index f342a1ba52f..ea61ceaf775 100644 --- a/sys/netinet6/nd6_nbr.c +++ b/sys/netinet6/nd6_nbr.c @@ -1,4 +1,4 @@ -/* $OpenBSD: nd6_nbr.c,v 1.57 2011/07/26 21:19:51 bluhm Exp $ */ +/* $OpenBSD: nd6_nbr.c,v 1.58 2011/10/14 16:16:43 stsp Exp $ */ /* $KAME: nd6_nbr.c,v 1.61 2001/02/10 16:06:14 jinmei Exp $ */ /* @@ -869,6 +869,7 @@ nd6_na_output(struct ifnet *ifp, struct in6_addr *daddr6, int icmp6len, maxlen, error; caddr_t mac; struct route_in6 ro; + struct sockaddr_dl *proxydl = NULL; mac = NULL; bzero(&ro, sizeof(ro)); @@ -990,6 +991,12 @@ nd6_na_output(struct ifnet *ifp, struct in6_addr *daddr6, } else flags &= ~ND_NA_FLAG_OVERRIDE; +#if NCARP > 0 + /* Do not send NAs for carp addresses if we're not the CARP master. */ + if (ifp->if_type == IFT_CARP && !carp_iamatch6(ifp, mac, &proxydl)) + goto bad; +#endif + ip6->ip6_plen = htons((u_short)icmp6len); nd_na->nd_na_flags_reserved = flags; nd_na->nd_na_cksum = 0; |