<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _serve_forever_wrapper(self, _srv, poll_interval=0.1):
 """ Wrapper for the server created for a SSH forward """

        self.logger.info('Opening tunnel: {0} <> {1}'.format(
            address_to_str(_srv.local_address),
            address_to_str(_srv.remote_address))
        )
        _srv.serve_forever(poll_interval)  # blocks until finished

        self.logger.info('Tunnel: {0} <> {1} released'.format(
            address_to_str(_srv.local_address),
            address_to_str(_srv.remote_address))
        )