diff options
Diffstat (limited to 'net/ipv6/sit.c')
| -rw-r--r-- | net/ipv6/sit.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 60415711563f..49aea94c9be3 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -527,9 +527,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info) case ICMP_PORT_UNREACH: /* Impossible event. */ return 0; - case ICMP_FRAG_NEEDED: - /* Soft state for pmtu is maintained by IP core. */ - return 0; default: /* All others are translated to HOST_UNREACH. rfc2003 contains "deep thoughts" about NET_UNREACH, @@ -551,7 +548,17 @@ static int ipip6_err(struct sk_buff *skb, u32 info) skb->dev, iph->daddr, iph->saddr); - if (t == NULL || t->parms.iph.daddr == 0) + if (t == NULL) + goto out; + + if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { + ipv4_update_pmtu(skb, dev_net(skb->dev), info, + t->dev->ifindex, 0, IPPROTO_IPV6, 0); + err = 0; + goto out; + } + + if (t->parms.iph.daddr == 0) goto out; err = 0; |