I recently decided to switch to proper wireguard instead of tailscale and finally be fully opensource on my home server, however, when I uninstalled Tailscale I lost internet on the server. I’ve tried editing the resolv.conf and rebooting a couple times but I can’t find anything else and I am square out of ideas. Has anyone experienced this and know a fix? My main server is running ubuntu server 23.10.
Editing this to say I’m dumb and anyone who has this issue in the future. I ran netplan try and it fixed itself.
I had a similar issue too. Tailscale messed up my resolv.conf and I rebuilt it to get basic dns working.
What I would do is look for a basic dns tutorial for Ubuntu to ensure either the local or remote dns server is working. Before you do that verify the internet is working by pinging something like 1.1.1.1 or 8.8.8.8 just as a sanity test. If that works then DNS is the last thing to get going.