wireless bridge configuration: /etc/network/interfaces ..

auto lo
iface lo inet loopback

auto br0
iface br0 inet static
address 192.168.1.0
network 192.168.1.0
netmask 255.255.255.0
broadcast 192.168.1.255
bridge_ports ath0 eth0
post-down wlanconfig ath0 destroy
pre-up wlanconfig ath9 create wlandev wifi0 wlanmode ap
pre-up iwconfig ath0 essid "alrac-net" channel 01 rate auto
pre-up ifconfig ath0 up
pre-up sleep 3