V6 still not supported

Masataka Ohta mohta at necom830.hpcl.titech.ac.jp
Mon Mar 28 13:50:57 UTC 2022


Philip Homburg wrote:

> Any form of communication with the current IPv4 internet requires some
> sort of CGNAT.

Any form of communication with the current IPv4/IPv6 mixed internet,
except for dual stack, also requires some sort of NAT.

> Technically, A+P (address
> plus port) mapping is a bit different, but for the customer that doesn't
> make a lot of difference.

A+P is equivalent to end to end NAT, though end to end NAT
only needs plain IP routers behind gateways, whereas A+P
requires routers with A+P routing capability for large
(but not very large) number of hosts. As networks behind
the gateways are local and not so large, it can not be a
practical problem.

> And A+P has serious scalability problems.

No, not at all.

						Masataka Ohta


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