#/etc/network/interfaces
auto eth0
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
dns-nameservers 127.0.0.1
up route add -net 192.168.250.0/27 gw 192.168.1.2
up route add -net 192.168.250.32/27 gw 192.168.1.4
up route add -net 192.168.100.0/24 gw 192.168.1.2
up route add -net 192.168.96.0/24 gw 192.168.1.3