#! /bin/shBR=${1:-"br549"}# fetch ip of working br0IP=`/sbin/ifconfig $BR | sed -n -e 's/^.*inet addr:\([0-9][0-9\.]*\).*$/\1/p'`echo "Using IP address $IP"ifconfig $BR downbrctl delbr $BRifconfig eth0 172.20.5.22rmmod bridge