I still don't get how people seem to think perma banning an ip is possible with dynamic IP Systems.
I've been Administrator in more than one chat, and believe me, it's frigging impossible to ban IP's.
With DSL only corporations get static IP's, and those can be banned. But private lines get dynamic.
Every 24 Hours, the IP get's changed. If you want it sooner, disconnect your modem and reconnect.
With CABLE it's a bit different, as there is no forced disconnect. But even then you don't have static.
With Cable, you usually get one dynamic IP and because you are never disconnected you keep that.
But if you disconnect the Modem and reconnect it, you would usually get a new IP again.