Thanks for the additional details!
In this case the output of "resolvectl" after "netplan apply" and after resume (no "netplan apply") might be useful. In addition to debug-logs of your systemd-resolved
$ sudo systemctl edit systemd-resolved
Adding: ``` [Service] Environment=SYSTEMD_LOG_LEVEL=debug ```
$ sudo systemctl daemon-reload $ sudo systemctl restart systemd-resolved # (or reboot)
Afterwards: $ journalctl -u systemd-resolved # (for a full "netplan apply", suspend, resume cycle)
Thanks for the additional details!
In this case the output of "resolvectl" after "netplan apply" and after resume (no "netplan apply") might be useful. In addition to debug-logs of your systemd-resolved
$ sudo systemctl edit systemd-resolved
Adding: SYSTEMD_ LOG_LEVEL= debug
```
[Service]
Environment=
```
$ sudo systemctl daemon-reload
$ sudo systemctl restart systemd-resolved # (or reboot)
Afterwards:
$ journalctl -u systemd-resolved # (for a full "netplan apply", suspend, resume cycle)