> The design of IPv6 was intentionally very conservative. To a first level of approximation IPv6 is simply “IPv4 with bigger addresses”.
I don't agree with this take. I think it's actually quite a bit more complex, and this is a large part of the reason adoption has been slow. In retrospect, I think it would have been better off in practice to just literally extend the size of IPv4 addresses, and make it as simple as converting all IPv4 systems to hold a larger address.
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