systemd-resolved ignoring custom DNS servers after Ubuntu 24.04 upgrade

[Oliver Grawert]

Hi,
Am Donnerstag, dem 05.03.2026 um 08:58 +0000 schrieb Vahid Shaik:
> 
> Hi,
> 
> 
> After upgrading from 22.04 to 24.04, my custom DNS servers in
> /etc/systemd/resolved.conf keep getting overwritten by
> NetworkManager.
> 
Given that Ubuntu nowadays uses netplan for all its network
configuration by default you probably want to take a look at the
official Ubuntu documentation for networking:

General:
https://netplan.readthedocs.io/en/stable/nm-all/

And specific to how NetworkManager can be managed in that setup through
netplan YAML files:
https://netplan.readthedocs.io/en/stable/netplan-everywhere/

ciao
	oli