Why should they have waited if they got it to work over ipv4, which is where the majority of their requests right now were going to come from. Release early, re

Why should they have waited if they got it to work over ipv4, which is where the majority of their requests right now were going to come from. Release early, release often and all that. They probably have other features in mind that haven't been released yet, does that mean that whatever those features are obviously are not important on the internet?