Wireguard Open_WRT client

File in /etc/config/network

root@OpenWrt:/etc/config# tail -15 network 

config interface 'wg0'
        option proto 'wireguard'
        option private_key 'kMtWcqDKWPBpZtZMotZhK7ebgYhHdsE5ZQ5DbjxTeEs='
        list addresses '10.20.0.13/32'

config wireguard_wg0
        option description 'wg_chr'
        option public_key 'a1vzyij5prL27dz/0lcUmMR5BPEh7KRqCvMMcPIeUB0='
        list allowed_ips '10.20.0.0/24'
        option route_allowed_ips '1'
        option endpoint_host '1x.xx.yy.zz'
        option endpoint_port '12345'
        option persistent_keepalive '25'

root@OpenWrt:/etc/config# 

and don't forget to allow firewall

On Mikrotik config only

[Interface]
PrivateKey = kMtWcqDKWPBpZtZMotZhK7ebgYhHdsE5ZQ5DbjxTeEs=
Address = 10.20.0.13/32
DNS = 8.8.8.8, 1.1.1.1

[Peer]
PublicKey = a1vzyij5prL27dz/0lcUmMR5BPEh7KRqCvMMcPIeUB0=
AllowedIPs = 10.20.0.0/24
Endpoint = 1x.xx.yy.zz:12345