Port / Networking assignment

[Cobalt]

For the most part seems ports 26000 thru 27000 are "unassigned" with respect to other traffic. Im just curious lets say a server doing a hop for a client connecting to a Quake server on a port that the server the connection is passing thru already has traffic on that port , what happens? Also lets say the server doing the hop has a virus or in some way is corrupting the quake packets. Does that usually lead to a disconnect for the client or could the client start getting unreliable messages?

[Baker]