# The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 5.175.249.78 netmask 255.255.255.0 post-up route add 5.175.249.1 dev eth0 post-up route add default gw 5.175.249.1 dev eth0 iface eth0 inet6 static accept_ra 0 address 2a0f:5707:aaf1:7a62:0000:0000:0000:0001 netmask 64 post-up /sbin/ip -r route add 2a0f:5707:aaf1::1 dev eth0 post-up /sbin/ip -r route add default via 2a0f:5707:aaf1::1