code: def create_ipv4(self, id_network_ipv4):
          
  
          url = 'vlan/v4/create/'
  
          vlan_map = dict()
          vlan_map['id_network_ip'] = id_network_ipv4
  
          code, xml = self.submit({'vlan': vlan_map}, 'POST', url)
  
          return self.response(code, xml)
docs: Create VLAN in layer 2 using script 'navlan'.
  
          :param id_network_ipv4: NetworkIPv4 ID.
  
          :return: Following dictionary:
  
          ::
  
            {‘sucesso’: {‘codigo’: < codigo >,
            ‘descricao’: {'stdout':< stdout >, 'stderr':< stderr >}}}
  
          :raise NetworkIPv4NaoExisteError: NetworkIPv4 not found.
          :raise EquipamentoNaoExisteError: Equipament in list not found.
          :raise VlanError: VLAN is active.
          :raise InvalidParameterError: VLAN identifier is none or invalid.
          :raise InvalidParameterError: Equipment list is none or empty.
          :raise DataBaseError: Networkapi failed to access the database.
          :raise XMLError: Networkapi failed to generate the XML response.
          :raise ScriptError: Failed to run the script.