For a long time now I had an AWS Lightsail VPS serving as a wireguard gateway to my home server.
Since recently connection to the Lightsail instance via wireguard is no longer possible.
When I took a look with SSH I got
$> sudo wg-quick up wg0 [#] ip link add wg0 type wireguard RTNETLINK answers: Operation not supported Unable to access interface: Protocol not supported [#] ip link delete dev wg0 Cannot find device "wg0"
To be sure I updated all packages, but still the same.
The port I use for wireguard has not changed and still is accessible according to the Network settings in Lightsail.
What change in the Lightsail VPS (automatic updates?) or Network settings can cause this? Especially since I did not change anything, it just stopped working over night.