ec.set(ovs, "bridge_name", bridge_name)
ec.set(ovs, "virtual_ip_pref", virtual_ip_pref)
ec.set(ovs, "controller_ip", controller_ip)
ec.set(ovs, "bridge_name", bridge_name)
ec.set(ovs, "virtual_ip_pref", virtual_ip_pref)
ec.set(ovs, "controller_ip", controller_ip)