code: def sanitize(self):
          '''
          Check if the current settings conform to the RFC and fix where possible
          '''
          # Check ports
          if not isinstance(self.source_port, numbers.Integral) \
          or self.source_port < 0 \
          or self.source_port >= 2 ** 16:
              raise ValueError('Invalid source port')
  
          if not isinstance(self.destination_port, numbers.Integral) \
          or self.destination_port < 0 \
          or self.destination_port >= 2 ** 16:
              raise ValueError('Invalid destination port'f sanitize(self):
          '''
          Check if the current settings conform to the RFC and fix where possible
          '''
          # Check ports
          if not isinstance(self.source_port, numbers.Integral) \
          or self.source_port < 0 \
          or self.source_port >= 2 ** 16:
              raise ValueError('Invalid source port')
  
          if not isinstance(self.destination_port, numbers.Integral) \
          or self.destination_port < 0 \
          or self.destination_port >= 2 ** 16:
              raise ValueError('Invalid destination port')
docs: Check if the current settings conform to the RFC and fix where possible