Determining Local IP Address within .profile

[Dan Kaminsky]

>
>
>If this can't be solved cleanly via /etc/profile or via shell startup
>scripts then I don't have as much of a quarm with bug 384.  Just wanted to
>ensure that people explored other options first.
>  
>
Socket handling is really the domain of the sshd; best to let it inform 
futher layers of its own socket than to have them attempt to reverse 
engineer the socket information after the fact.  (It's certainly 
*possible*, but not particularly portably, flexibly, or even securely.)

SSH_CLIENT was sufficient when multi-homed systems were rare -- that's 
changed.

One interesting question:  Any objections to adding ProxyCommand 
functionality to sshd?  Since ssh is a server-speaks-first protocol, 
there are a few limitations to having the silent client the only side 
that can use non-socket connectors.

--Dan