[usr1106]

Depends on the country. Whenever I visit Belgium I get IPv6 in random guest houses. Google sees nearly 50% adoption. https://www.google.com/ipv6

In Finland 2 out of 3 mobile operators give you IPv6 by default (and mobile data usage is very high).

[Itsdijital]

Why is the graph so perfectly periodic?

[ivlad]

Weekend vs workdays. Shows that IPv6 penetration for residential ISPs is higher than IPv6 adoption at corporations.

[usr1106]

Exactly. And you can see Christmas. As soon as a paid network administrator is involved IPv6 seems to be a problem :)