test -e /etc/default/openvswitch-switch && . /etc/default/openvswitch-switch
network_interfaces () {
+ [ -z "${RUNLEVEL}" ] && return
INTERFACES="/etc/network/interfaces"
[ -e "${INTERFACES}" ] || return
bridges=`awk '{ if ($1 == "allow-ovs") { print $2; } }' "${INTERFACES}"`