Actually, IP bans are pretty useless too. Most people can just restart their router to get a new IP, that's how all these "hackers" evaded the old kick/ban system.
OHMYGODISPOILEDSOMETHING
IP bans cant to shit
Even if the Doser doesnt restart the router
You see this is how it goes
1. Idiot floods connection by sending over 1000 packets
2. They travel to The server
3. The packets have to be dropped somewhere so they drop on the connections line aka they still make lag even if you IP ban them they still need to drop them
The only way to reduce lag is to reroute packets to a other server. (4chan LOL)
Coolz will not do that so he cant really do shit about it. Even if he range-bans the ip.
And btw some hackers have static ips (I do)
So they cant change their ip so easy lol.