Wireguard ceased to work after Fedora 26->27 upgrade

[Germano Massullo]

Hi there, some days ago I upgraded my system from Fedora 26 to 27, and
Wireguard ceased to work.


# systemctl status wg-quick at wg0.service
● wg-quick at wg0.service - WireGuard via wg-quick(8) for wg0
   Loaded: loaded (/usr/lib/systemd/system/wg-quick at .service; enabled;
vendor preset: disabled)
   Active: failed (Result: exit-code) since Fri 2017-12-01 17:55:43 CET;
2min 18s ago
     Docs: man:wg-quick(8)
           man:wg(8)
           https://www.wireguard.com/
           https://www.wireguard.com/quickstart/
           https://git.zx2c4.com/WireGuard/about/src/tools/wg-quick.8
           https://git.zx2c4.com/WireGuard/about/src/tools/wg.8
  Process: 907 ExecStart=/usr/bin/wg-quick up wg0 (code=exited,
status=1/FAILURE)
 Main PID: 907 (code=exited, status=1/FAILURE)

dic 01 17:55:43 machine systemd[1]: Starting WireGuard via wg-quick(8)
for wg0...
dic 01 17:55:43 machine wg-quick[907]: [#] ip link add wg0 type wireguard
dic 01 17:55:43 machine wg-quick[907]: RTNETLINK answers: Operation not
supported
dic 01 17:55:43 machine wg-quick[907]: Unable to get device: Protocol
not supported
dic 01 17:55:43 machine systemd[1]: wg-quick at wg0.service: Main process
exited, code=exited, status=1/FAILURE
dic 01 17:55:43 machine systemd[1]: Failed to start WireGuard via
wg-quick(8) for wg0.
dic 01 17:55:43 machine systemd[1]: wg-quick at wg0.service: Unit entered
failed state.
dic 01 17:55:43 machine systemd[1]: wg-quick at wg0.service: Failed with
result 'exit-code'.


# dnf list installed | grep wireguard
wireguard-dkms.noarch              1:0.0.20171127-1.fc27     
@jdoss-wireguard 
wireguard-tools.x86_64             1:0.0.20171127-1.fc27     
@jdoss-wireguard

# dkms status
returns nothing

kernel packages:
kernel-4.13.16-300.fc27.x86_64
kernel-core-4.13.16-300.fc27.x86_64
kernel-devel-4.13.16-300.fc27.x86_64
kernel-headers-4.13.16-300.fc27.x86_64


Do you have any idea?
Thank you!