These "50%" and "90%" claims are significantly higher than the measurements indicate: https://stats.labs.apnic.net/ipv6 https://stats.labs.apnic.net/ipv6 says

These "50%" and "90%" claims are significantly higher than the measurements indicate: https://stats.labs.apnic.net/ipv6 https://stats.labs.apnic.net/ipv6 says 16%. https://www.facebook.com/ipv6/?tab=ipv6_country https://www.facebook.com/ipv6/?tab=ipv6_country says 6%. https://www.google.com/intl/en/ipv6/statistics.html#tab=per-country-ipv6-adoption https://www.google.com/intl/en/ipv6/statistics.html#tab=per-... says 0.5%.