> Absolutely not. Existing IPv4 hardware and software expects addresses to be 4 bytes long.

As does DNS.

"A" records are fixed at 32 bits, so you have to add a new record type and update all DNS software, plus user-space API/library code and data structures to ask for and store the new record type.

Just like IPv6.

There is no "just" adding more addresses: whatever scheme anyone comes up with is the same amount of work as IPv6.

* https://github.com/becarpenter/misc/blob/main/why6why.md