Re: "the world is clinging stubbornly to IPv4"
"Microsoft since Win7 [aside might have been Vista but...] have shipped Windows with an IPv6 stack that works out of the box."
Right. And you are aware that Microsoft had substantial difficulty switching to IPv6 internally not all that long ago? e.g. https://www.theregister.co.uk/2017/01/19/windows_10_bug_undercuts_ipv6_rollout/
Biting the hand that feeds IT
