I've noticed with some netrek players you can't get certain
information such as when you send @ to their slot it does not return a
hostmask or ip, it just gives a blank line, the other case is when
pinging someone (!) it will say that it could not ping them.

I am curious exactly what is occuring on the player's end to cause
these 2 behaviors? If they had a firewall it must be allowing UDP
through.

Zach