Re: IPv4 flag day

[Randy Bush via NANOG <nanog () lists nanog org>]

> Was there a backup plan for getting everyone to switch to IPv6,

the plan from the ipv6 designers was dual-stack.  this was before ipv4
run-out.  as dual-stack requires v4 space ~= v6 space, this plan was
based on the assumption that the transition would be quick, before ipv4
run-out.

there was no backup plan.

when the transition was not quick, 42 ingenious transition schemes
arose, of varying quality.  some have stood the test of time.

beyond that, ipv6 has been the biggest promoter of nat ever imagined.

randy
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