On Wed, 08 Sep 2021 11:39:50 -0700, Owen DeLong via NANOG said:
The reality is that if we get content dual-stacked and stop requiring IPv4 for new eyeball installations, that’s the biggest initial win.
The problem is "get content dual-stacked". Somebody made this handy page of the IPv6 status for the Alexa Top 500. http://www.delong.com/ipv6_alexa500.html Awful lot of red spots even in the top 100. Hell, even amazon.com isn't IPv6 yet. And the long tail is going to be the death of a thousand cuts for the call center unless you have a way to deal with those sites. And the devil is in the details. cnn.com itself has a quad-A. But looking at Chrome loading it with the IPvFoo extension, I see that of the 145 addresses it hits, only 38 are IPv6, the rest are IPv4. On the other hand, looking at *who* are the IPv4, they seem to be overwhelmingly ad servers and analytics sites - so maybe hitting cnn.com as IPv6-only is a win for the consumer. I rather suspect that the CFO of CNN would see it differently though.... (Eerily reminiscent of the factoid that 60% of the cost of a long distance phone call before the AT&T breakup was keeping the accounting records so they could bill the customer)