code: def _sanatize_network_params(self, kwargs):
          '''
          Sanatize novaclient network parameters
          '''
          params = [
              'label', 'bridge', 'bridge_interface', 'cidr', 'cidr_v6', 'dns1',
              'dns2', 'fixed_cidr', 'gateway', 'gateway_v6', 'multi_host',
              'priority', 'project_id', 'vlan_start', 'vpn_start'
          ]
  
          for variable in six.iterkeys(kwargs):  # iterate over a copy, we might delete some
              if variable not in params:
                  del kwargs[variable]
          return kwargf _sanatize_network_params(self, kwargs):
          '''
          Sanatize novaclient network parameters
          '''
          params = [
              'label', 'bridge', 'bridge_interface', 'cidr', 'cidr_v6', 'dns1',
              'dns2', 'fixed_cidr', 'gateway', 'gateway_v6', 'multi_host',
              'priority', 'project_id', 'vlan_start', 'vpn_start'
          ]
  
          for variable in six.iterkeys(kwargs):  # iterate over a copy, we might delete some
              if variable not in params:
                  del kwargs[variable]
          return kwargs
docs: Sanatize novaclient network parameters