Hi Max, There was indeed a problem with the netmask, so BIRD did not consider the peer as directly connected. thanks for your help. Julien
2018-04-25 23:33 GMT+02:00 Maximilian Wilhelm <m...@rfc2324.org>: > Anno domini 2018 Julien Sansonnens scripsit: > > Hi, > > > I'm having a hard time trying to peer with some router over GRE tunnel. > I'm > > using bird 1.6.4 > > I have many GRE tunnels and BGP sessions is working fine on all of the > them > > except one. > > > > Session is locked on "Idle" state. > > Here are my logs: > > > > 2018-04-25 15:22:00 <TRACE> carl: Waiting for fd00:1111::2 to become my > > neighbor > > 2018-04-25 15:22:02 <TRACE> carl: Incoming connection from fd00:1111::2 > > (port 32967) rejected > [...] > > I can ping6 f d00:1111::2 withou problem. Tunnel looks OK to me. > > > tcpdump: verbose output suppressed, use -v or -vv for full protocol > decode > > listening on peer-carl, link-type LINUX_SLL (Linux cooked), capture size > > 262144 bytes > > 15:26:59.597762 IP6 fd00:1111::2.47991 > fd00:1111::1.bgp: Flags [S], seq > [...] > > How are the IPs configured on the tunnel? Did you configure fd00:1111::2/64 > and fd00:1111::1/64 or are both IPs /128 with a peer IP/route to the > other side? I've seen this issue with the latter configuration. > > Best > Max > -- > Alles sollte so einfach wie möglich gemacht sein. > Aber nicht einfacher. (Einstein) >