KIF: Received address message for unknown interface

27 Apr 2026

      When doing a churn test we see bird speaker logs overwhelmed with below
messages and we hit high CPU.

2026-04-20 08:19:06.304 [0001] <WARN> I/O loop cycle took 61075.339 ms for
1 events
2026-04-20 08:19:47.863 [0001] <ERR> KIF: Received address message for
unknown interface 513817

Version used: v3.0.2
Source : https://github.com/CZ-NIC/bird

We see similar issues in calico bird being fixed Remove interfaces that are
flagged as shutdown. by axel7born · Pull Request #111 · projectcalico/bird
<https://github.com/projectcalico/bird/pull/111/changes/b32135cb60855b8a73cfcc43343df215f4631bcf>

Could someone one check and let me know if we have fix or work around this
issue?
...

KIF: Received address message for unknown interface

Kiran Katabathena