code: def add_ipv6(self, id_network_ipv6, id_equip, description):
          
  
          ip_map = dict()
          ip_map['id_network_ipv6'] = id_network_ipv6
          ip_map['description'] = description
          ip_map['id_equip'] = id_equip
  
          code, xml = self.submit({'ip': ip_map}, 'POST', 'ipv6/')
  
          return self.response(code, xml)
docs: Allocate an IP on a network to an equipment.
          Insert new IP for network and associate to the equipment
  
          :param id_network_ipv6: ID for NetworkIPv6.
          :param id_equip: ID for Equipment.
          :param description: Description for IP.
  
          :return: Following dictionary:
  
          ::
  
              {'ip': {'id': < id_ip >,
              'id_network_ipv6': < id_network_ipv6 >,
              'bloco1': < bloco1 >,
              'bloco2': < bloco2 >,
              'bloco3': < bloco3 >,
              'bloco4': < bloco4 >,
              'bloco5': < bloco5 >,
              'bloco6': < bloco6 >,
              'bloco7': < bloco7 >,
              'bloco8': < bloco8 >,
              'descricao': < descricao >}}
  
          :raise InvalidParameterError: NetworkIPv6 identifier or Equipament identifier  is null and invalid,
          :raise InvalidParameterError: The value of description is invalid.
          :raise EquipamentoNaoExisteError: Equipment not found.
          :raise RedeIPv6NaoExisteError: NetworkIPv6 not found.
          :raise IPNaoDisponivelError: There is no network address is available to create the VLAN.
          :raise ConfigEnvironmentInvalidError: Invalid Environment Configuration or not registered
          :raise DataBaseError: Networkapi failed to access the database.
          :raise XMLError: Networkapi failed to generate the XML response.