shaping bittorrent?

[Aaron Seelye]

Hello,

I'm wondering if there are any easy or at least documented ways to shape 
bittorrent traffic with pf.  If not, is there any way without writing 
software to do it?  I've searched the mailing list, and google, it would 
seem that it's all port based, and more and more clients are using 
non-standard BT ports now.  Cisco and others have methods of doing actual 
packet inspection which allows you to truly shape/throttle this traffic, but 
I'm wondering what the free/open community has, as I'd much prefer a bsd 
solution to a cisco one.

Thank you,

Aaron Seelye