code: def start(self, local_port, remote_address, remote_port):
          
          self.local_port = local_port
          self.remote_address = remote_address
          self.remote_port = remote_port
  
          logger.debug(("Starting ssh tunnel {0}:{1}:{2} for "
                        "{3}@{4}".format(local_port, remote_address, remote_port,
                                         self.username, self.address)))
          self.forward = Forward(local_port,
                                 remote_address,
                                 remote_port,
                                 self.transport)
          self.forward.start()
docs: Start ssh tunnel
  
          type: local_port: int
          param: local_port: local tunnel endpoint ip binding
          type: remote_address: str
          param: remote_address: Remote tunnel endpoing ip binding
          type: remote_port: int
          param: remote_port: Remote tunnel endpoint port binding