Post 24.09 uypgrade i am running into a strange issue with FRR, specifically BGP.
I have two peerings over VPN to different locations.
Routing uptime has always been stable but since the upgrade I notice I have a constant flapping peer. Running a pcap over the ipsc interface I see the following error code from BGP.
98e78cfd-8794-4992-841a-46ac9b9155e6-image.png
A bit of googling later, it seems this occurs when two neighbors attempt to establish at the same time. Strange that this is happening now so the solution I've read is to place a peer into passive mode. I do that and the peerings never come up.
I disable passive mode and the neighbors come up and establish for about a minute and go back down again.
I then restart FRR service which doesn't help.
I reverted back to the previous install and no issue (thank goodness for boot environments).
Something is very suspect with the latest FRR release.
Anyone care to help out?
to be clear, there are two BGP neighbors on the pfsense. The other neighbor is just fine.
Connections established 4; dropped 3
Last reset 00:02:36, Notification received (Cease/Connection Collision Resolution)
External BGP neighbor may be up to 1 hops away.
Local host: 172.28.0.6, Local port: 5469
Foreign host: 172.28.0.5, Foreign port: 179
Nexthop: 172.28.0.6
Nexthop global: fe80::92ec:77ff:fe34:cedc
Nexthop local: fe80::92ec:77ff:fe34:cedc
BGP connection: non shared network
BGP Connect Retry Timer in Seconds: 120
Estimated round trip time: 20 ms
Read thread: on Write thread: on FD used: 24
BFD: Type: single hop
Detect Multiplier: 3, Min Rx interval: 300, Min Tx interval: 300
Status: Down, Last update: 0:00:13:05