Universal Limit connections per IP

Hi,

I think not too dificult to do :

Limit the number of default connection per IP to 1 with a whitelist system.
The whitelist allows for some players to be a 2 or 3 connections per IP .

The player connects => verification IP.

If the IP address does not match a player = > allows the connection.
If the IP address matches => check the whitelist, IF connect player OR connected player is whitelisted => allows the connection.

The system is based on the steamid , not the ip ( IP Dynamics problem )

The goal is to luted against the double and triple account for craft.

If someone want to create the plugin , I pay.