auto lo
iface lo inet loopback

# james: from stephanes lxc-demo.sh
##auto br-lxc
##iface br-lxc inet static
##    address 192.168.254.1
##    netmask 255.255.255.0
##    post-up echo 1 > /proc/sys/net/ipv4/ip_forward
##    post-up iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
##    pre-down echo 0 > /proc/sys/net/ipv4/ip_forward
##    pre-down iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
##