Comment 37 for bug 2022030

Hi Danilo,

I tried your steps on comment #34, but no lucky, from the systemd-networkd log, it looks the same issue.

1) upgrade to mantic
>
ubuntu@a257ubut03:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Mantic Minotaur (development branch)
Release: 23.10
Codename: mantic

2) reboot and check if the problem persists
>
Yes, the problem persists.

3) if the problem is still there, upgrade systemd to the version in mantic-proposed (which is 253.5)
>
ubuntu@a257ubut03:~$ dpkg -l | grep systemd
ii systemd 253.5-1ubuntu1 s390x system and service manager
ii systemd-dev 253.5-1ubuntu1 all systemd development files
ii systemd-hwe-hwdb 252.4.3 all udev rules for hardware enablement (HWE)
ii systemd-resolved 252.5-2ubuntu3 s390x systemd DNS resolver
ii systemd-sysv 252.5-2ubuntu3 s390x system and service manager - SysV compatibility symlinks
ii systemd-timesyncd 252.5-2ubuntu3 s390x minimalistic service to synchronize local time with NTP servers

4) do the same tests to see if the problem is still present
>
Yes, the vlan interface disappeared after 'sudo reboot' and can be showed up after 'sudo systemctl restart systemd-networkd'. I'll attach the systemd-networkd log and the timestamps after systemd upgraded are:
Jul 18 08:31 -> reboot the os
Jul 18 08:36 -> restart systemd-networkd service

Thanks.