raspbian configuration for bridging eth0 and wlan0

interfaces

# /etc/network/interfaces
# Configured for bridging wifi<->ethernet

# Tested with:
# - RPi Model B Rev. 1
# - 2013-02-09-wheezy-raspbian
# - Edimax 8192-series USB wireless adapter
#   - /etc/modprobe.d/8192cu.conf contents:
#   - options 8192cu rtw_power_mgnt=0 rtw_enusbss=0
# - firmware: c2d133fb4efe9c9995da7fd7e1c45d74254f5c4b
#   - installed using: https://github.com/Hexxeh/rpi-update
# - bridge-utils: sudo apt-get install bridge-utils
# Details, references, further info:
# - http://blog.chaucery.com/2013/02/raspberry-pi-wireless-bridge.html

auto lo

iface lo inet loopback

iface eth0 inet manual

auto wlan0
iface wlan0 inet manual

auto br0
iface br0 inet dhcp
  bridge_ports wlan0 eth0
  bridge_stp off
  bridge_fd 0
  bridge_waitport 0

wpa-iface  wlan0
wpa-bridge br0
wpa-ssid   "YourWifiSSID"
wpa-psk    "YourWpaPassphrase"