auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address  1.1.1.2
        netmask  255.255.255.0
        gateway  1.1.1.1
        post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp


auto vmbr0
iface vmbr0 inet static
        address  1.1.1.3
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0