URD is Cisco's URL Rendezvous Directory. It's part of a system that allows streaming multicast video. I have no idea what kind of systems or servers serve up streaming content this way, but that's what it's for.
Thanks, tacit.
Streaming multicast video via e-mail?
And if it's that obscure, I wonder why Little Snitch has made it a default rule?
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire