diff options
Diffstat (limited to 'proto/bgp/packets.c')
| -rw-r--r-- | proto/bgp/packets.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c index fc572a21..0e142a7a 100644 --- a/proto/bgp/packets.c +++ b/proto/bgp/packets.c @@ -732,13 +732,18 @@ bgp_rx_open(struct bgp_conn *conn, byte *pkt, uint len) if ((as4 != asn) && (asn != AS_TRANS)) log(L_WARN "%s: Peer advertised inconsistent AS numbers", p->p.name); - if (as4 != p->remote_as) + /* When remote ASN is unspecified, it must be external one */ + if (p->remote_as ? (as4 != p->remote_as) : (as4 == p->local_as)) { as4 = htonl(as4); bgp_error(conn, 2, 2, (byte *) &as4, 4); return; } + + conn->received_as = as4; } else { - if (asn != p->remote_as) + if (p->remote_as ? (asn != p->remote_as) : (asn == p->local_as)) { bgp_error(conn, 2, 2, pkt+20, 2); return; } + + conn->received_as = asn; } /* Check the other connection */ |