etc/network/interfaces.m4

   1 auto lo
   2 iface lo inet loopback
   3
   4 auto eth0=grenode
   5 iface grenode inet static
   6         address   LOCAL_IPV4
   7         network   LOCAL_IPV4
   8         broadcast LOCAL_IPV4
   9         netmask   LOCAL_NETMASK
  10         post-up   ip route add LOCAL_GATEWAY dev $IFACE
  11         post-up   ip route add default via LOCAL_GATEWAY
  12         post-down ip route del default via LOCAL_GATEWAY
  13         post-down ip route del LOCAL_GATEWAY dev $IFACE