old_contents: # 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.
  
  import logging
  from netaddr import *
  
  
  def merge(dbag, data):
      # A duplicate ip address wil clobber the old value
      # This seems desirable ....
      if "add" in data and data['add'] is False and "ipv4_address" in data:
          if data['ipv4_address'] in dbag:
              del(dbag[data['ipv4_address']])
      else:
          remove_keys = set()
          for key, entry in dbag.iteritems():
              if key != 'id' and entry['mac_address'] == data['mac_address']:
                  remove_keys.add(key)
                  break
  
          if data['remove'] and key not in remove_keys:
              remove_keys.add(key)
  
          for remove_key in remove_keys:
              del(dbag[remove_key])
  
          dbag[data['ipv4_address']] = data
  
      return dbag
  
new_contents: # 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.
  
  import logging
  from netaddr import *
  
  
  def merge(dbag, data):
      # A duplicate ip address wil clobber the old value
      # This seems desirable ....
      if "add" in data and data['add'] is False and "ipv4_address" in data:
          if data['ipv4_address'] in dbag:
              del(dbag[data['ipv4_address']])
      else:
          remove_keys = set()
          for key, entry in dbag.iteritems():
              if key != 'id' and entry['mac_address'] == data['mac_address'] and data['remove']:
                  remove_keys.add(key)
                  break
  
          for remove_key in remove_keys:
              del(dbag[remove_key])
  
          dbag[data['ipv4_address']] = data
  
      return dbag
  
subject: fix expunging vm will remove dhcp entries of another vm in VR (#4627)