I rearranged my network and ended up getting these in messages:
cannot forward src fe80:9::a691:b1ff:fe1f:d2a0, dst
2001:44b8:3110:fb00:200:5eff:fe00:10a, nxt 58, rcvif 9, outif 1
I guess I could run ifconfig and count interfaces, but I'm lazy and the
kernel knows what they are.
cannot forward src fe80:9::a691:b1ff:fe1f:d2a0, dst
2001:44b8:3110:fb00:200:5eff:fe00:10a, nxt 58, rcvif carp0, outif em0
ok? (caveat: kernel n00b, don't assume I know what I'm doing)
Index: netinet6/ip6_forward.c
===================================================================
RCS file: /cvs/src/sys/netinet6/ip6_forward.c,v
retrieving revision 1.95
diff -u -p -r1.95 ip6_forward.c
--- netinet6/ip6_forward.c 30 Jun 2017 11:29:15 -0000 1.95
+++ netinet6/ip6_forward.c 2 Jan 2018 08:44:38 -0000
@@ -86,7 +86,7 @@ ip6_forward(struct mbuf *m, struct rtent
{
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
struct sockaddr_in6 *dst, sin6;
- struct ifnet *ifp = NULL;
+ struct ifnet *ifp = NULL, *ifp_dst = NULL;
int error = 0, type = 0, code = 0;
struct mbuf *mcopy = NULL;
#ifdef IPSEC
@@ -197,12 +197,27 @@ reroute:
ip6_log_time = time_uptime;
inet_ntop(AF_INET6, &ip6->ip6_src, src6, sizeof(src6));
inet_ntop(AF_INET6, &ip6->ip6_dst, dst6, sizeof(dst6));
- log(LOG_DEBUG,
- "cannot forward "
- "src %s, dst %s, nxt %d, rcvif %u, outif %u\n",
- src6, dst6,
- ip6->ip6_nxt,
- m->m_pkthdr.ph_ifidx, rt->rt_ifidx);
+ ifp = if_get(m->m_pkthdr.ph_ifidx);
+ ifp_dst = if_get(rt->rt_ifidx);
+ if (ifp != NULL && ifp_dst != NULL) {
+ log(LOG_DEBUG,
+ "cannot forward src %s, dst %s, "
+ "nxt %d, rcvif %s, outif %s\n",
+ src6, dst6,
+ ip6->ip6_nxt,
+ ifp->if_xname, ifp_dst->if_xname);
+ } else {
+ log(LOG_DEBUG,
+ "cannot forward src %s, dst %s, "
+ "nxt %d, rcvif %u, outif %u\n",
+ src6, dst6,
+ ip6->ip6_nxt,
+ m->m_pkthdr.ph_ifidx, rt->rt_ifidx);
+ }
+ if_put(ifp_dst);
+ ifp_dst = NULL;
+ if_put(ifp);
+ ifp = NULL;
}
if (mcopy)
icmp6_error(mcopy, ICMP6_DST_UNREACH,
--
Darren Tucker (dtucker at dtucker.net)
GPG key 11EAA6FA / A86E 3E07 5B19 5880 E860 37F4 9357 ECEF 11EA A6FA (new)
Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.
