NAT64+DNS64 is the best transition method as it eliminates the need for dual-stack.
Clients can be IPv6 only and ideally need a CLAT installed to handle the edge case of IPv4 literals in apps that don't use DNS. The ISP's internal network can be IPv6 only. Only this NAT64 translator needs to speak both IPv6 and IPv4, and only for non-IPv6 traffic.
On hacker news. You're going to find a big contingent of people who are getting things like VPS/colo/dedicated/cloud hosting, only get an IPv6 address on that (or finding that an IPv4 address costs extra) ... and are occasionally finding some customers can't reach their sites without every host having an IPv4 address or paying for something like cloudflare.
So there is a bit of a demand, especially here, for forward compatibility.
supertrope|2 years ago
Clients can be IPv6 only and ideally need a CLAT installed to handle the edge case of IPv4 literals in apps that don't use DNS. The ISP's internal network can be IPv6 only. Only this NAT64 translator needs to speak both IPv6 and IPv4, and only for non-IPv6 traffic.
candiodari|2 years ago
So there is a bit of a demand, especially here, for forward compatibility.