rsnuffle ksnuffle experts?

I've been playing with ksnuffle recently. It's a lot of fun to watch network traffic and see what's happening. (I'm easily amused.) I tried to get rsnuffle to run on my router, I can connect and authenticate to the port where it's running, but when I try to select the interface device, there is nothing in the pick list. The documentation is a bit lacking, so it's hard to troubleshoot. Has anybody been able to get this to work? What's the trick? TIA, Steven -- Open Source Software depends on your support. If you use it, be sure to give something back. http://www.suse.com | http://www.kde.org http://www.mozilla.org | http://www.xemacs.org