IPv6 woes - RFC

Masataka Ohta mohta at necom830.hpcl.titech.ac.jp
Tue Sep 28 15:13:26 UTC 2021


Mark Andrews wrote:

>> Heh, NAT is not that evil after all. Do you expect that all the home
>> people will get routable public IPs for all they toys inside house?
> 
> Yes! Remember routable does not mean that it is reachable from outside.

Do you mean, because of hole punching, "not routable" does not mean
that it is "not reachable from outside"?

>> And if they change ISP they will get new range?
> 
> Yes!

The problem is that IPv6 was promised to perform *AUTOMATIC*
*RENUMBERING*, with which, even if address ranges change, all
the configuration information, including those for DNS glues,
can be automatically updated.

With careful design by real experts, it is possible to design
such a protocol even with IPv4 but IPv6 "committee" naturally
abandoned to do so with IPv6.

							Masataka Ohta


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