Then you're back at having "two internets" again. (Well, I don't agree that it's two Internets, but you'd be stuck with the same situation we have already becau

Then you're back at having "two internets" again. (Well, I don't agree that it's two Internets, but you'd be stuck with the same situation we have already because people would continue to use v4 in order for that software to continue to work.)