3 ms·

This has been proposed many times already, and it actually wouldn't work.

• jedberg 2y ago
  Why not?
  • ianburrell 2y ago
    Because the IPv4 host can't talk to new protocol hosts. IPv4 hosts can only do 32-bit addresses and don't know about the wrapping. If they did, they would be new protocol hosts. I had idea of putting the internal address for NAT in options so could be addresses directly. But too many boxes would need to be changed, and lots of unchanged boxes remove options. Plus, all the IPv4 applications wouldn't know what to do with stack of addresses. It would devolve to NAT.
    • jedberg 2y ago
      Of course they can't. But the point is that if a client wants to interact with IPv6, they only have to upgrade themselves, and not wait for everything in between to get upgraded. And the service can serve on their IPv4 gateway and then pass the traffic back to other hosts to server IPv4 clients.
      • deleted 2y ago
        [deleted]