I can somewhat understand certain rules like that, but not to the extent that SE has made it into. I live in the US. My IP CAN change via either a MAC address change for my router box or just being offline for long enough. Plus what happens if the next person to get the IP I got banned on tries to play the game? They won't be able to. I use Comcast as an ISP. CenturyLink (the DSL provider in my area) uses a system that if you powercycle your modem, you get a new IP. They have an instant recycling policy. Comcast says that until your Lease expires and even sometimes for a time after that Lease expires, you will still retain the same IP address. Leases for IPs from Comcast last a week at a time. So if I lose power 3 days into my lease, I'll typically have 4 days to get power back online before my IP is recycled. If I'm 1 day away from expiration though, typically Comcast's system will place a lock on the IP for up to 3 days after original Lease expiration should've occurred.