openssh unix dev - Jan 2008 - route information

Would it be possible to add a debug option that displays each host  
name as it connects to them?

I create tunnels that sometimes uses 3 intermediate machines before  
getting to the final destinations (I'm sure others create tunnels that  
are much deeper).  To debug a problem, it would be helpful to see each  
connection being made.  ssh -v[v[v]] doesn't display the hostnames (or  
I'm missing it in all the other verbage).

To farther build upon that, showing ping times between each host and  
total ping time between the source and destination would be great!

Standard ping and traceroute programs don't provide this information  
because they don't follow the ssh route/tunnel but instead use the  
standard system routing.

Thanks,

Richard Mitchell

spamfake at mac.com

Richard Mitchell ecrivait :
> Would it be possible to add a debug option that displays each host  
> name as it connects to them?
> 
> I create tunnels that sometimes uses 3 intermediate machines before  
> getting to the final destinations (I'm sure others create tunnels that
> are much deeper).  To debug a problem, it would be helpful to see each  
> connection being made.

If I establish a tunnel :
    $ ssh -R 3000:host2:2222 host1 sleep 2000

And then in another terminal:
    $ ssh -p 3000 host1

The second ssh process has no idea that the connection it is making
to host1 is forwarded to host2. It talks through a socket with host1,
and that's it. It happens that the "active" end is not on host1
but
that host1 accepts the connection, connects to host2, and then
forwards data to host2, (the sshd-child initiaded by the first ssh
command does that). There is no way for the second ssh process to
know about it. So it looks to me that what you're asking for is not
possible.

Regards,

Flavien.