auto lo eth0
iface lo inet loopback
iface eth0 inet static
        address <<BOX_ADDR>>
        netmask 255.255.255.255
        broadcast <<BOX_ADDR>>
        network <<BOX_ADDR>>
        post-up route add <<ESX_GW_ADDRESS>> dev eth0
        post-up route add default gw <<ESX_GW_ADDRESS>>
        pre-down route del <<ESX_GW_ADDRESS>> dev eth0
        pre-down route del default gw <<ESX_GW_ADDRESS>>