def open_forwarded_tcpip_channel(self, src_addr, dest_addr):
return self.open_channel("<STR_LIT>", dest_addr, src_addr)<EOL>
Request a new channel back to the client, of type ``forwarded-tcpip``.

This is used after a client has requested port forwarding, for sending
incoming connections back to the client.

:param src_addr: originator's address
:param dest_addr: local (server) connected address