diff options
Diffstat (limited to 'sys/netinet6/icmp6.c')
| -rw-r--r-- | sys/netinet6/icmp6.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/netinet6/icmp6.c b/sys/netinet6/icmp6.c index 3391d57..c4651ef 100644 --- a/sys/netinet6/icmp6.c +++ b/sys/netinet6/icmp6.c @@ -1122,6 +1122,15 @@ icmp6_mtudisc_update(struct ip6ctlparam *ip6cp, int validated) if (!validated) return; + /* + * In case the suggested mtu is less than IPV6_MMTU, we + * only need to remember that it was for above mentioned + * "alwaysfrag" case. + * Try to be as close to the spec as possible. + */ + if (mtu < IPV6_MMTU) + mtu = IPV6_MMTU - 8; + bzero(&inc, sizeof(inc)); inc.inc_flags = 1; /* IPv6 */ inc.inc6_faddr = *dst; |
