Keith Moore writes:
and at some delta-T in the future, some things will be different. it
might (or might not) be that lots more hosts run v6, it might (or might
not) be that NATs are discredited, it might (or might not) be that the
Internet mostly exists to connect walled gardens.
Probably the last of these, but for economic rather than technical or
political reasons. As long as multiple IP addresses cost ten times
more than a single address, NAT will stay. This would be true even in
a pure IPv6 world.
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