[X-Unix] SSH Tunnels and Network name problems

[Paul]

Hi everyone.

I have an issue with an SSH tunnel I am trying to set up with another  
computer, but before I post about that issue, I'd like to see if I  
can resolve a related one first, just in case it is causing the first  
one. Apologies if it is not strictly X-Unix subject matter, but I've  
had no luck on the X-Users list.

First, on my iBook I have two network Locations set up: one is a  
location where my iBook has a fixed IP and DNS name assigned and is  
used on a large LAN at university, and the other location is at home,  
where it's IP is also fixed but in the 192.168.x.x range. My main  
computer acts as a gateway and thus shares the broadband connection  
between it and my iBook.

The problem is that if I set the computer's name in the Sharing  
preferenes pane to kasumi.local, as I want it, while on the  
University network location, and then come home and swap it to the  
Gateway network location, I am told that there is already a  
kasumi.local on the network and thus the name will be changed to  
kasumi-2. Any idea why this happens and how to avoid it? Changing it  
back while on the Gateway location does not work, and I can only do  
this while on the University network location (in other words, not  
physically connected to my home network).

Thanks in advance.

Paul