diff options
Diffstat (limited to 'proto/ospf/packet.c')
| -rw-r--r-- | proto/ospf/packet.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/proto/ospf/packet.c b/proto/ospf/packet.c index b84780d3..7f9f3b39 100644 --- a/proto/ospf/packet.c +++ b/proto/ospf/packet.c @@ -270,9 +270,6 @@ ospf_rx_hook(sock *sk, uint len) if (pkt == NULL) DROP("bad IP header", len); - if (ifa->check_ttl && (sk->rcv_ttl < 255)) - DROP("wrong TTL", sk->rcv_ttl); - if (len < sizeof(struct ospf_packet)) DROP("too short", len); @@ -379,6 +376,10 @@ found: if (ipa_equal(sk->laddr, ifa->des_routers) && (ifa->sk_dr == 0)) return 1; + /* TTL check must be done after instance dispatch */ + if (ifa->check_ttl && (sk->rcv_ttl < 255)) + DROP("wrong TTL", sk->rcv_ttl); + if (rid == p->router_id) DROP1("my own router ID"); |