alt Hacker News> The IPv4 address space should have been included in the IPv6 space, allowing transparent intercommunication between any IP addresses, regardless whether they were old IPv4 addresses or new IPv6 addresses.
How would you have implemented it that is different from the NAT64 that actually exists, including shoving all IPv4 addresses into 64:ff9b::/96?
Ideally, 464XLAT should have been there from the beginning and its host part (CLAT) should have been a mandatory part of IP stack.