stop_qemu_networking.sh

#!/bin/sh
#
#   Scrict basic code was taken from http://en.wikibooks.org/wiki/QEMU/Networking and modified.
#       All copyrights belong to the original authors of the wikibooks article
#       Last changed 2011/08/05
#
#       script to bring down the bridge/tap device after QEMU closed
#
#
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#
# Bring down eth0 and br0
#
echo "0/6.    STOP QEMU NETRWORK INTERFACE ----- ----- ----- ----- STOP QEMU NETRWORK INTERFACE"
sbinPath=/usr/sbin

echo "1/6.    Bring down eth0 and br0"
ifconfig eth0 down
ifconfig br0 down
#
# Delete the bridge
#
echo "2/6.    Delete the bridge"
${sbinPath}/brctl delbr br0
#
# bring up eth0 in "normal" mode
#
echo "3/6.    Bring up eth0 in 'normal' mode"
ifconfig eth0 -promisc
ifconfig eth0 up
#
# delete the tap device
#
echo "4/6.    Delete the tap device $1"
${sbinPath}/openvpn --rmtun --dev $1
#
# start firewall again ... disabled (see start script)
#
#/sbin/service firestarter start

# Refreshing the DHCP settings
echo "5/6.    Refreshing the DHCP"
dhclient eth0 -r
dhclient eth0
echo "6/6.    FINISHED ----- ----- ----- ----- ----- ----- ----- FINISHED"