"WARNING:Unknown index #### seen, reloading interface list" spamming logs

[adam-vest]

Summary

This is effectively a continuation of the closed issue #4230 - seeing the exact same issue on my microk8s cluster, though the proposed solution in that issue does not help:

root@host:~# apt install linux-modules-extra-$(uname -r)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
linux-modules-extra-6.8.0-90-generic is already the newest version (6.8.0-90.91).
linux-modules-extra-6.8.0-90-generic set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 48 not upgraded.

I'm on amd64 as well, not arm.

root@host:~# journalctl --since today|grep "WARNING:Unknown index"|tail -15
Feb 12 19:49:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2768 seen, reloading interface list
Feb 12 19:50:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2769 seen, reloading interface list
Feb 12 19:51:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2770 seen, reloading interface list
Feb 12 19:52:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2771 seen, reloading interface list
Feb 12 19:53:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2772 seen, reloading interface list
Feb 12 19:54:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2773 seen, reloading interface list
Feb 12 19:55:02 host networkd-dispatcher[1262]: WARNING:Unknown index 2774 seen, reloading interface list
Feb 12 19:56:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2775 seen, reloading interface list
Feb 12 19:57:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2776 seen, reloading interface list
Feb 12 19:58:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2777 seen, reloading interface list
Feb 12 19:59:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2778 seen, reloading interface list
Feb 12 20:00:00 host networkd-dispatcher[1262]: WARNING:Unknown index 2779 seen, reloading interface list
Feb 12 20:01:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2780 seen, reloading interface list
Feb 12 20:02:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2781 seen, reloading interface list
Feb 12 20:03:01 host networkd-dispatcher[1262]: WARNING:Unknown index 2782 seen, reloading interface list

What Should Happen Instead?

No error message.

Reproduction Steps

No reproduction steps presently, but the environment is Ubuntu Noble 24.04, Microk8s v1.34.3 revision 8585.

Introspection Report

Can provide if desired.

Can you suggest a fix?

Nope

Are you interested in contributing with a fix?

I can help debug, of course!