2 ms·

I'd guess adoption will look less like an exponential or straight increasoming function and more like a sigmoid. As more people adopt, those left will be the i

I'd guess adoption will look less like an exponential or straight increasoming function and more like a sigmoid. As more people adopt, those left will be the increasingly resistant. Eventually, IPv4 re-sale markets will get pricey enough that bean-counters will insist.

tialaramex 7y ago
I doubt it on the bean counters, resale will trail off and stop being interesting. The IPv4 address space isn't big enough for the whole world, but it's easily big enough to indefinitely handle millions of holdouts left on legacy systems. Eventually they stop being enough traffic to make them uninteresting to the backbone, and the backbone becomes IPv6-only - but the v4 Internet still exists, in a sense, as a bunch of networks connected via IPv6 translation gateways. Perhaps for a century or more. Right now if you're a large organisation it makes sense to go IPv6 only internally and translate at your border. All your address headaches vanish immediately (remember trying to figure out how to cut up groups of systems so they'd fit in neat binary subnets in IPv4? Not a problem in IPv6, any conceivable number of machines will go in a one-size-fits-all IPv6 /64 Ethernet subnet) and you now have no future IT transition problems, because internally transition is finished. You own some translation gateways to connect your IPv6 clients to anything from the legacy IPv4 Internet and over time the traffic through those decreases so that cost will diminish. Whether the rest of the world takes 50 years or 15 to upgrade it's just a tweak to the budget for the translation gateways, everything else stays the same for you.