wg destroy hangs

[Kirill Miazine]

Recently on snapshots I have noticed that ifconfig wgN destroy would 
just hang there, without any way to get back the control. Power reset 
would be the only way to reboot and regain control.

I don't have exact date when it happened first, maybe some 10 days ago, 
but problem is present on most recent snapshot (amd64).

-- Kirill