root@pankow ~# herd start wireguard-wg0
Warning: `/gnu/store/4k0v3y3hjjgn82y3k9h039asdz134y5l-wireguard-config/wg0.conf' is world accessible
[#] ip link add wg0 type wireguard
Error: Unknown device type.
Unable to access interface: Protocol not supported
[#] ip link delete dev wg0
Cannot find device "wg0"
herd: exception caught while executing 'start' on service 'wireguard-wg0':
Throw to key `%exception' with args `("#<&invoke-error program: \"/gnu/store/lb27ws34znp0mz3n0wiv8gb93b54v21h-wireguard-tools-1.0.20210914/bin/wg-quick\" arguments: (\"up\" \"/gnu/store/4k0v3y3hjjgn82y3k9h039asdz134y5l-wireguard-config/wg0.conf\") exit-status: 1 term-signal: #f stop-signal: #f>")'.