diff options
Diffstat (limited to 'freebsd/sys/netinet6/nd6_rtr.c')
| -rw-r--r-- | freebsd/sys/netinet6/nd6_rtr.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/freebsd/sys/netinet6/nd6_rtr.c b/freebsd/sys/netinet6/nd6_rtr.c index bd6fa33b..030cac3d 100644 --- a/freebsd/sys/netinet6/nd6_rtr.c +++ b/freebsd/sys/netinet6/nd6_rtr.c @@ -298,8 +298,16 @@ nd6_ra_input(struct mbuf *m, int off, int icmp6len) } if (nd_ra->nd_ra_retransmit) ndi->retrans = ntohl(nd_ra->nd_ra_retransmit); - if (nd_ra->nd_ra_curhoplimit) - ndi->chlim = nd_ra->nd_ra_curhoplimit; + if (nd_ra->nd_ra_curhoplimit) { + if (ndi->chlim < nd_ra->nd_ra_curhoplimit) + ndi->chlim = nd_ra->nd_ra_curhoplimit; + else if (ndi->chlim != nd_ra->nd_ra_curhoplimit) { + log(LOG_ERR, "RA with a lower CurHopLimit sent from " + "%s on %s (current = %d, received = %d). " + "Ignored.\n", ip6_sprintf(ip6bufs, &ip6->ip6_src), + if_name(ifp), ndi->chlim, nd_ra->nd_ra_curhoplimit); + } + } dr = defrtrlist_update(&dr0); } |