Hello I am very new to ubuntu, I installed wireguard almost 6 months ago, and it was working fine, untill yesterday when my ubuntu was updated, the wirguard does not want to come up, and gives the below status:
May 31 08:41:03 lenovo systemd[1]: Starting WireGuard via wg-quick(8) for wg0...
May 31 08:41:03 lenovo wg-quick[5463]: [#] ip link add wg0 type wireguard
May 31 08:41:03 lenovo wg-quick[5463]: Error: Unknown device type.
May 31 08:41:03 lenovo wg-quick[5463]: Unable to access interface: Protocol not supported
May 31 08:41:03 lenovo wg-quick[5463]: [#] ip link delete dev wg0
May 31 08:41:03 lenovo wg-quick[5463]: Cannot find device "wg0"
May 31 08:41:03 lenovo systemd[1]: : Main process exited, code=exited,
status=1/FAILURE
May 31 08:41:03 lenovo systemd[1]: : Failed with result 'exit-code'.
May 31 08:41:03 lenovo systemd[1]: Failed to start WireGuard via wg-quick(8) for wg0.here is my ubuntu version: Ubuntu 18.04.4 LTS
2 Answers
Try reinstalling package wireguard-dkms (remove and install again). Probably afterwards a reboot will be needed.
Run the Following commands :
sudo apt-get update
sudo apt-get upgrade
sudo systemctl enable --now systemd-resolvedand reboot the system
its work on my case , hope it will helpful for you
