woah this is my first time hearing about dns64, this seems really fascinating.

I might sound naive but why aren't we moving towards ipv6 if there is already a service which can make migrations easy I suppose for the end customer.

It seems that it is easy for a ipv6 client to connect to ipv4 lets say by using dns64 but it seems that the same isn't true for vice versa?

Now I am genuinely uncertain but Couldn't something like this be possible lets say by having both ipv4 and ipv6 running and the ipv4 could be through some tunneling software like serveo.net or the alikes and map-E seems to allow them to coexist too

I mean it seems that cloudflare warp can do this too if you want to connect to ipv6 and you have ipv4 but that adds a level of trust into cloudflare and etc. but still, do the benefits of ipv6 over ipv4 justify the migration of sorts or would these two things always coexist is a question/mystery

Like.. I searched the benefits and it seems that the truly great benefit is that everyone can get a ipv6 because of its higher size (basically limitless ipv6) as compared to ipv4 which are limited/exhausted right now.

IPSec seems to be another benefit which was optional and complex in ipv4 and its mandatory in ipv6 and it seems really nice to have encryption and so much more at a packet level.

What is the blocker? Like, as a server, do I really ever need a ipv4 if I have a ipv6 server, I think I might need it if I want everyone to view my website or etc. things on my server if their devices could be ipv4 and they can't access my ipv6 website I think but still aren't there any mitigations around it or sorts, I am kinda curious.