Can Riot PLEASE add an IP Adress ban?

This is something I always see, I see people on the boards talking about "I got permabanned on my first account, so I started again" or "Just keep making new accounts, Riot can't control what you say on their game" Seriously?!? Smurfs are already a challenge on early levels, let alone toxic smurfs. With an IP ban, if you get permabanned, you're done, no questions asked. You would have to either switch internet providers or play on a different internet connection. This way Riot isn't sweeping the problem under the rug, they would be RIDDING them of the community. I guarantee this would fix the problems of some toxic players. But it's just an idea