#!/bin/bash
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

nw_label=$1
br=`xe network-list name-label="$nw_label" params=bridge |cut -d ':' -f 2 |tr -d ' ' `
pbr=`ovs-vsctl br-to-parent $br`
while [ "$br" != "$pbr" ]
do
    br=$pbr
    pbr=`ovs-vsctl br-to-parent $br`
done
echo $pbr