Use configured local address over the one that is taken from the BGP session #2827
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…session. This is needed in cases when using VRFs over GENEVE Tunnels where we bind the listening address to one internal IP for security reasons. Without this fix the local address was overridden with the listening address resulting in wrong nexthop advertisement.
fujita
reviewed
Aug 18, 2024
| @@ -879,6 +879,9 @@ func (s *BgpServer) toConfig(peer *peer, getAdvertised bool) *oc.Neighbor { | |||
| if state == bgp.BGP_FSM_ESTABLISHED { | |||
| peer.fsm.lock.RLock() | |||
| conf.Transport.State.LocalAddress, conf.Transport.State.LocalPort = peer.fsm.LocalHostPort() | |||
| if conf.Transport.Config.LocalAddress != "0.0.0.0" { | |||
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This was my initial change and then when tested things didnt worked as expected. So, added a log and this is the value I got. You think I should add also != "" ?
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@barlev-eddie maybe we can use STDLIB to check localhost, what will happen when user uses 127.0.0.1 / localhost fqdn?
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Use configured local address over the one that is taken from the BGP TCP connection.
This is needed in cases when using VRFs over GENEVE Tunnels where we bind the listening address to one internal IP for security reasons. Without this fix the local address was overridden with the listening address resulting in wrong nexthop advertisement.