Cockpit - No Internet Access

Afternoon all,

I'm running a pretty simple home lab at the moment, 1 machine running Ubuntu 22.04 with Docker installed on it and multiple containers within Docker.

I decided today that I'd have a look at Cockpit which I installed directly on the physical machine with the usual sudo apt install cockpit command. The install was fine and I can access the web interface via https://hostip:9090.

The weird issue I've run into is around internet access via the Cockpit web GUI. When I login I get a 'Loading available updates failed' message in the Health section of the dashboard and a 'Loading available updates failed. Cannot refresh cache whilst offline. Please reload the page after resolving the issue.' message on the Software Updates tab. If I try adding applications from the Applications tab I get a 'Error: Cannot download packages whilst offline.' message.

My host server 100% has internet access, I can ping out from the terminal within Cockpit, but the actual Cockpit application seems to be having issues getting to the internet.

Has anyone else here got Cockpit installed? Has anyone had this issue?

Cheers
Joel