code: def list(self, networkipv6=None, ipv6=None):
          
  
          uri = 'api/dhcprelayv6/?'
          if networkipv6:
              uri += 'networkipv6=%s&' % networkipv6
          if ipv6:
              uri += 'ipv6=%s' % ipv6
  
          return self.get(uri)
docs: List all DHCPRelayIPv6.
  
          :param: networkipv6: networkipv6 id - list all dhcprelay filtering by networkipv6 id
            ipv6: ipv6 id - list all dhcprelay filtering by ipv6 id
  
          :return: Following dictionary:
            [
              {
              "networkipv6": <networkipv4_id>,
              "id": <id>,
              "ipv6": {
                  "block1": <block1>,
                  "block2": <block2>,
                  "block3": <block3>,
                  "block4": <block4>,
                  "block5": <block5>,
                  "block6": <block6>,
                  "block7": <block7>,
                  "block8": <block8>,
                  "ip_formated": "<string IPv6>",
                  "networkipv6": <networkipv6_id>,
                  "id": <ipv6_id>,
                  "description": "<string description>"
              },
              {...}
            ]
  
          :raise NetworkAPIException: Falha ao acessar fonte de dados