nano /etc/network/interfaces
address 192.168.0.XXX netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.101 # dns-* options are implemented by the resolvconf package, if installed dns-nameservers 192.168.0.101 dns-search XXXXXX
потом еще пробывал так:
ifconfig eth0 192.168.0.XX netmask 255.255.255.0 route add defoult wg 192.168.0.101
