Bird starts, and claims that it is waiting for the upstream routers to become neighbors…

2024-07-31 06:25:25.774 isp1: Initializing
2024-07-31 06:25:25.774 isp2: Initializing
2024-07-31 06:25:25.774 isp1: Starting
2024-07-31 06:25:25.774 isp1: State changed to start
2024-07-31 06:25:25.774 isp2: Starting
2024-07-31 06:25:25.774 isp2: State changed to start
2024-07-31 06:25:25.774 Started
2024-07-31 06:25:25.775 isp2: Waiting for 4.4.92.131 to become my neighbor
2024-07-31 06:25:25.775 isp1: Waiting for 4.4.92.130 to become my neighbor

…however, I can see in tcpdump that bird is refusing BGP connections…

08:50:31.055601 IP 4.4.92.130.34302 > 4.4.92.140.179: Flags [S], seq 733565924, win 16384, options [mss 1424,wscale 0,nop,sackOK,eol], length 0
08:50:31.056685 IP 4.4.92.140.179 > 4.4.92.130.34302: Flags [R.], seq 0, ack 733565925, win 0, length 0

…and that’s because bird is not listening…

[root@fw9b log]# netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:8953 0.0.0.0:* LISTEN
tcp6 0 0 :::1013 :::* LISTEN
tcp6 0 0 :::444 :::* LISTEN
tcp6 0 0 :::81 :::* LISTEN

Bird is running...

[root@fw9b log]# ps ax|grep bird
20738 pts/0 S+ 0:00 grep bird
29732 ? Ss 0:00 /usr/sbin/bird

Strace shows that it is not binding to the port.

 

I read a full thread about this exact symptom here: https://bird.network.cz/pipermail/bird-users/2020-September/014824.html

Unfortunately, I’m brand new to bird and I was unable to follow some of it.

 

-Eric

 

 

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