[CS1.6] Steam Networking Servers no longer listed in the master server list

[Splatt581]

Some time ago, the Steam Networking listen servers (with 169.254 fakeip subnet) stopped being displayed in server browser - the master server stopped sending them in the general list of servers.

This problem is not observed in other GoldSrc games. I believe the problem arose due to the large number of servers in CS 1.6, now more than 20k of them have been added to the master server due to fake redirect servers.