/systemd-networkd/99-server.netdev 
[NetDev]
Name = wg0
Kind = wireguard
Description = WireGuard

[WireGuard]
ListenPort = 51820
PrivateKey = 123123

[WireGuardPeer]
PublicKey = 123123
PresharedKey = 123123
AllowedIPs = 10.10.0.2/32