I see that this is a very old issue, but I bring it up again, since I just ran into the same problem.
I just contacted the autossh developer Carson Harding, who kindly explained the problem to me. By default, autossh uses two monitoring ports which must be specified with the -M option. Debian silently sets this to 21021 (and 21022?) if you don't set the -M option. Thus, if you are using many connections to the same destination, you must explicitly set other ports using the -M option. You can also disable this feature using '-M 0'. Read the excellent autossh man page for a detailed description. It would be nice if Debian would issue a more descriptive warning, something like: "Warning: remote port forwarding failed for listen port 21021. Try specifying another port with the -M option if you are connecting multiple instances of autossh to the same host." Instead of the: "Warning: remote port forwarding failed for listen port 21021" -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
