5 ms·

So you have to update every router to actually route the "non-legacy" addresses correctly. How is this different from IPv6?

• bluGill 11mo ago
  That is the easy part - most of the core routers have supported ipv6 for decades - IIRC many are IPv6 only on the backbone. The hard part is if there is even one client that doesn't have the update you can't use the new non-legacy addresses as it can't talk to you. Just like today, it is likely that most client will support your new address, but ISPs won't route them for you.
  • arthurfirst 11mo ago
    Yes of course I know all that. That was the whole point of the overlay first approach. i.e. Build a network that works over the existing network before adding any barriers to entry like specialized hardware requirements.