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)
** Changed in: netplan
Status: Incomplete => Invalid
** Summary changed:
- netplan, multiple dhcp route with metric failure
+ systemd-resolved switches primary interface for name resolution after
suspend/resume cycle
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https://bugs.launchpad.net/bugs/2060778
Title:
systemd-resolved switches primary interface for name resolution after
suspend/resume cycle
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