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avoid ICMPv6 redirect if the packet filter rewrite dst addr to an address 

on the incoming interface.  cedric@openbsd
This commit is contained in:
itojun 2003-06-30 08:00:59 +00:00
parent 38d08be727
commit 2317e81b85
1 changed files with 8 additions and 3 deletions
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11
sys/netinet6/ip6_input.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ip6_input.c,v 1.63 2003/05/14 14:41:33 itojun Exp $ */
/* $NetBSD: ip6_input.c,v 1.64 2003/06/30 08:00:59 itojun Exp $ */
/* $KAME: ip6_input.c,v 1.188 2001/03/29 05:34:31 itojun Exp $ */
/*
@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ip6_input.c,v 1.63 2003/05/14 14:41:33 itojun Exp $");
__KERNEL_RCSID(0, "$NetBSD: ip6_input.c,v 1.64 2003/06/30 08:00:59 itojun Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@ -230,6 +230,7 @@ ip6_input(m)
u_int32_t rtalert = ~0;
int nxt, ours = 0;
struct ifnet *deliverifp = NULL;
int srcrt = 0;
#ifdef IPSEC
/*
@ -315,12 +316,16 @@ ip6_input(m)
if (1)
#endif
{
struct in6_addr odst;
odst = ip6->ip6_dst;
if (pfil_run_hooks(&inet6_pfil_hook, &m, m->m_pkthdr.rcvif,
PFIL_IN) != 0)
return;
if (m == NULL)
return;
ip6 = mtod(m, struct ip6_hdr *);
srcrt = !IN6_ARE_ADDR_EQUAL(&odst, &ip6->ip6_dst);
}
#endif /* PFIL_HOOKS */
@ -683,7 +688,7 @@ ip6_input(m)
return;
}
} else if (!ours) {
ip6_forward(m, 0);
ip6_forward(m, srcrt);
return;
}