Cockpit: offline errors when not using Network Manager

[tmjpugh]

Check for new Applications and Loading available updates fail when not using Network Manager.
"Cannot refresh cache whilst offline" or "Cannot download packages whilst offline" messages received

Expected Behavior
I would expect these function to work regardless of application managing network connection.
If network OK, it should proceed without error

I previously switched to Network Manager and these succeed without issue.

[martinpitt]

Which operating system are you on? This is a known issue/limitation in Ubuntu 16.04, but this was fixed in later NetworkManager versions. I. e. on Ubuntu 17.10 it should work fine.

[tmjpugh]

My apology, it is 16.04.

[martinpitt]

Ack, thanks. This is a duplicate of #8477 then.

[ptrcnull]

I'm using Netplan with default renderer (networkd, I guess) on Ubuntu Server 19.04 and unfortunately it still happens.

[david50407]

same on 18.10

[edisno]

It might be the same on 20.04 as well.

[lsaadeh]

having this issue on ubuntu 20.04

[parbash]

Also having this issue on Ubuntu 20.04