Interesting. I asked moot some years ago about that, hopefully he's okay with sharing his reply here: http://i.imgur.com/JXoyUdA.jpg
as called out in the cloudflare blog post from the other post[1], implementing the spam / abuse / fraud detection piece to be as effective in an IPv6 world is a huge challenge. IPv6 opens up so many different attacks that can be used based on the increased address space, you have to give 4chan kudos.
I wonder if anyone appreciates the irony of IPv6 Day and D-Day being both on the same day -- both difficult struggles for a critical objective. Of course one is a matter of life and death, and the other just continued freedom.
I think comparing something like IPv6 adoption and D-Day really is beyond apples and oranges. IPv6 is important, make no mistake. but compared to what the world went through on D-Day?
Not to mention he's exaggerating just how much of a solution IPv6 is. It solves the problem of address exhaustion, no doubt, and that's really about it. From a security aspect, it's just as bad, if not even worse with unauthenticated NDP, ICMPv6 router solicitations and so on. Try playing around with the THC-IPv6 toolkit some day.