Self-follow-up: Google says India is 74% IPv6: * https://www.google.com/intl/en/ipv6/statistics.html#tab=per-country-ipv6-adoption https://www.google.com/intl

Self-follow-up: Google says India is 74% IPv6: * 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-... How would connectivity for 10^9 people work with only IPv4? See also China. Each of those countries is 2^30 people, plus add another 2^30 for the continent of Africa, and you're already over 2^31. IPv4 is 2^32 addresses.