VLAN configuration broken after update to 2.5.2

ca1f

Hi y'all,

after upgrading my pfsense installation from 2.4.5 to 2.5.2 on my APU2 board it seems that the VLAN configuration on the LAGG interface is not applied properly anymore and I can't figure out how to fix it.

All vlan interfaces show in ifconfig as:

lagg0.600: flags=8803<UP,BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        groups: vlan
        vlan: 0 vlanpcp: 0 parent interface: <none>

Re-applying the VLAN configuration in the web interface for that particular interface by just pressing the Save button fixes it for the given interface. The interface works after that and it shows properly in ifconfig now:

lagg0.600: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        groups: vlan
        vlan: 600 vlanpcp: 0 parent interface: lagg0
        media: Ethernet autoselect
        status: active

Unfortunately the fix does not persist and the VLAN configuration is broken again after a reboot. I already tried reinstalling pfsense from scratch and restoring a backup of the configuration but that didn't fix the problem.

I ran out of ideas how to fix this problem permanently and am looking for help.