> 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.

* https://datatracker.ietf.org/doc/html/rfc1726#section-5.5

▲ commandersaki an hour ago | parent [-]

It was also predicted that the address exhaustion problem would be averted, in fact that was the purpose of v6. It failed to deliver.

	▲	throw0101a 11 minutes ago \| parent [-]
		> It was also predicted that the address exhaustion problem would be averted, in fact that was the purpose of v6. It failed to deliver. It was averted: how do you think we got several billion smartphones connected to the Internet? Do you think that would have been practicable without IPv6? Comcast—not even mobile—had to move to IPv6 on their landline ISP business because they ran out of IPv4 addresses for TR-069: they were using multiple 10/8 networks in different regions NATed to hide them from each other. IPv4 became untenable.