Sv getrealip
From FTE
Safer way to retrieve the true IP of clients.
1 (secure, supported by all clients) = Stuffs the client to send a packet back to the server and thus determines the IP from that.
2 (very secure, supported by mQWCL and FTE) = The server will also send an A2A_PING to the retrieved IP and expect A2A_ACK back.
3 (extremely secure, supported by FTE) = Will also require a challenge.
