A Swiss VM hosting provider has a technical blog post about how to kill IPv4 completely on FreeBSD. That is to say, turning it completely off, not just preferring IPv6. They then solicit concrete solutions describing, along with a proof of concept, how to turn IPv4 completely off in other operating systems and allowing them to communicate with IPv6 only.
Earlier on SN:
Vint Cerf's Dream Do-Over: 2 Ways He'd Make the Internet Different (2016)
You have IPv6. Turn it on. (2016)
We've Killed IPv4! (2014)
(Score: 2) by VLM on Sunday January 20 2019, @04:10PM
ARP protocol will be unhappy if you set every ethernet card on your lan to 1:2:3:4:5:6, so in the sense that they're unique on a link-local lan that actually works remains correct.