auto enX0
iface enX0 inet static
    address 104.130.253.16
    netmask 255.255.255.0
    gateway 104.130.253.1
iface enX0 inet6 static
    address 2001:4800:7818:103:be76:4eff:fe02:8c18
    netmask 64
    gateway fe80::def