How to set up DNS on Ubuntu 22.04 without a netplan config.
I finally found the solution here: https://serverok.in/systemd-resolved ( Archive.org cache) In case the link dies in the future, Create a file: sudo mkdir /etc/systemd/resolved.conf.d/ sudo nano /etc/systemd/resolved.conf.d/dns_servers.conf Add my DNS in this file: [Resolve] DNS=8.8.8.8 1.1.1.1 Then restart systemd-resolved sudo systemctl restart systemd-resolved It works even after reboot :-) PS : No idea why my DNS configuration was lost during the upgrade from 20.04 to 22.04.