I've set up a connection with autossh that creates some tunnels at system startup, but if I try to connect, after successful login (with RSA key) connection fall down, here a trace:

debug1: Authentication succeeded (publickey).

debug1: Remote connections from LOCALHOST:5006 forwarded to local address localhost:22
debug1: Remote connections from LOCALHOST:6006 forwarded to local address localhost:80
debug1: channel 0: new [client-session]
debug1: Requesting [email protected]
debug1: Entering interactive session.

debug1: remote forward success for: listen 5006, connect localhost:22
debug1: remote forward success for: listen 6006, connect localhost:80

debug1: All remote forwarding requests processed
debug1: Sending environment.
debug1: Sending env LANG = it_IT.UTF-8
debug1: Sending env LC_CTYPE = en_US.UTF-8
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype [email protected] reply 0
debug1: channel 0: free: client-session, nchannels 1
Transferred: sent 2400, received 2312 bytes, in 1.3 seconds
Bytes per second: sent 1904.2, received 1834.4
debug1: Exit status 1

What can be the problem?

All this stuff is managed by a script already running on another machine (creating reverse tunnels on the same machine but with different ports)