code: def bind_address(self):
          
          result = c_char_p(
              self.lib.iperf_get_test_bind_address(self._test)
          ).value
          if result:
              self._bind_address = result.decode('utf-8')
          else:
              self._bind_address = '*'
  
          return self._bind_address
docs: The bind address the iperf3 instance will listen on
  
          use * to listen on all available IPs
          :rtype: string