On Tue, Oct 23, 2007, Brandon Galbraith wrote:

I believe the bittorrent client Azureus actually does prioritize based on subnet, picking local subnet hosts first (such as when used in a large NAT'd environment).

-brandon

That hasn't been my experience with some of the statistics coming out of colleges. People either just don't download the same stuff or they can't see each other via different clients. Now, if there were one IETF standardised P2P protocol which clients could implement, with basic proxying/content routing at higher levels built in; maybe some of this mess would be saner. Unfortunately I think the cat's not just out of the bag, its gone and had 15 generation of kittens.. Adrian