In America I've never had a non-mobile ISP offer IPv6. At this point it would be best to recognize the sunk cost and give up on the migration. IPv6 will never reach the 100% needed to turn off IPv4.

> IPv6 will never reach the 100% needed to turn off IPv4.

As was predicted in 1994:

      Furthermore, we note that, in all probability, there will be IPv4
      hosts on the Internet effectively forever.  IPng must provide
      mechanisms to allow these hosts to communicate, even after IPng
      has become the dominant network layer protocol in the Internet.

Thugs are slowly moving. Another 5 years and most windows machines will support clat. Another 20 and most machines will hopefully support it. I wish it was embedded in the Linux kernel though as that increases the chance of your device working transparently on an IPv6 only subnet using slaac and the application creator doesn’t need to know anything other than their internal dhcp gets a 10.x address and everything works using 464.

I think the future is bright and most problems will be solved by 2040, and almost all by 2050.

And I've only ever had v6, both on DOCSIS and fiber. Both observations are pretty useless in the grand scheme of things; actual adoption rates are what matter.

> At this point it would be best to recognize the sunk cost and give up on the migration.

That's a pretty wild thing to say in the comment section of an article about v6 reaching 50% eyeballs-side deployment.