[Mordekay]

So you are going to support no-steam Vivo? You know this is against the board rules? Suggesting the use of illegal software IS supporting it, no matter how you call it "using in a good way".
IF YOU read his first post again you will see that EVERYONE has the SAME IP. So which ways to differ between players he has left? NONE! The only way is to ban by STEAM_ID. No others will work. Even dumb dproto cannot generate different ID's if all players have the same IP.
The only person deserving a ban right now is you Vivo, for supporting no-steam and insults.

Oh, and if you read the quoted code again you will see that it WILL ban per IP IF the other ways do not work!
This is for LAN-servers where you cannot get your ID-auth challenge. But as we are talking about an internet server here he CAN get steam-id's.