> (what services are ipv6 only, even today) A good majority chunk of cell carriers today have gone IPv6-only for phones. They rely on NAT64 gateways (rather th

> (what services are ipv6 only, even today) A good majority chunk of cell carriers today have gone IPv6-only for phones. They rely on NAT64 gateways (rather than CGNAT) to access IPv4-only resources. A lot of consumer internet is slowly following that lead as a better alternative to CGNAT. At least if your customers are consumers we are really close to "You might only need to serve IPv6." (It's the "Enterprise-grade internet" that is interestingly lagging and falling behind in IPv6 adoption, and maybe doesn't see enough reason to support IPv6-only well; especially if the cost of IPv4 plateaus again, as some suggest it might. Recent AWS cost increases for IPv4 have been something of a call to action to some Corporations, but in general if you are B2B you probably need IPv4 support for a while longer as the economic incentives games play out on a long, slow horizon.)