[OpenAFS] lost contact with fileserver

[Derrick J Brashear]

Force ethereal to not use rudp. It's dumb and not figuring out that Rx 
packets are Rx packets.

> an Ethereal capture while trying to lookup the contents of
> /afs/uni-mannheim.de and attached the logfile, maybe someone can read
> out of it what is the problem. It lists a lot of RUDP "Malformed
> Packet"s and actually no useful AFS replies from the server. I'm behind
> a router, maybe that is a problem.