[mort96]

In order to predict how bad the long tail will be though we should ideally look at the graphs broken down by network type. Does the increase just represent a switch from people using their residential ISP connection for everything to people using their cell connection more, or does it actually reflect residential connections moving from v4 to v6?

[maccard]

The only way to break the long tail is regulation or forced updates. If you're at 95% rollout, it's fairly likely the last 5% of holdouts won't do it willingly, so they need the stick.

[mort96]

I would definitely support regulation here, especially regulation forcing ISPs to provide v6. That would at least take care of one large part of the problem.