auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp
    udhcpc_opts -T 1 -A 3

auto eth1
iface eth1 inet dhcp
    udhcpc_opts -T 1 -A 3
    metric 199
    pre-up service tap-vsockd start
    post-down service tap-vsockd stop