Absolutely horrible hacks to get radmin on a TCP socket.

Absolutely horrible hacks to get radmin on a TCP socket.

We're pulling the rug out from under the code multiple times,
and casting pointers of type "foo" to type "bar" repeatedly.
Trust us, we know what we're doing!

radmin now requires a CHAP-style challenge/response when using
TCP sockets.  It's crap, but it's better than nothing