Comment by ianburrell

It is why the Google IPv6 stats fluctuate between weekends/holidays and weekdays. IPv6 is much more prevalent on home and mobile networks so increase on non-work dyas. Companies have IPv4 networks that they don't want to upgrade. We have dichotomy where 50% of clients have IPv6, but most of the small sites do not.

The other thing I have seen is that engineers make things complicated. Normal person has IPv6 enabled by default or enables it in router, and it just works and they never notice. Engineers want to configure things manually, but IPv6 is hard if fight against the dynamic defaults.