Something

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 164.33.7.47
        netmask 255.255.255.0
        network 164.33.7.0
        broadcast 164.47.7.255
        gateway 164.33.7.1

auto br1
iface br1 inet static
        address 10.232.1.47
        netmask 255.255.255.0
        network 10.232.1.0
        broadcast 10.232.1.255
        bridge_ports eth1

auto tap0
iface tap0 inet manual
        up ifconfig $IFACE 0.0.0.0 up
        down ifconfig $IFACE down
        post-up /usr/sbin/brctl addif br1 tap0