Init script to bring up Open vSwitch bridges at boot time on Ubuntu/Debian

openvswitch-bridges

#!/bin/bash
#
# openvswitch-bridges
#
# Brings up Open vSwitch bridges at boot time on Ubuntu/Debian.
# Needs to start _after_ the OVS services. This usually works:
#
#     update-rc.d openvswitch-bridges defaults 21
#
### BEGIN INIT INFO
# Provides:             openvswitch-bridges
# Required-Start:       openvswitch-switch
# Required-Stop:	
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    ifups OVS bridges at boot
### END INIT INFO

NETWORK_CONFIG_FILE="/etc/network/interfaces"

start() {
    BRIDGES=$(ovs-vsctl list-br)
    for BRIDGE in $BRIDGES; do
        if grep -q -w "$BRIDGE" $NETWORK_CONFIG_FILE; then    
            ifup "$BRIDGE"
        fi
    done
}

case $1 in
    start)
        start
        ;;
    stop)
        ;;
    *)
        echo "Usage: $0 {start}"
        exit 2
        ;;
esac