'Upgrading' NAT64 to 464XLAT?

[Lorenzo Colitti]

On Tue, Nov 26, 2013 at 5:55 PM, Doug Barton <dougb at dougbarton.us> wrote:

> Which uses more IPv4 addresses, a traditional IPv4 NAT or 464xlat? At the
> end of the day the PLAT still has to talk to the v4 net.
>

Sure, but that's not the point of 464xlat.

In networks where 464xlat makes sense, having IPv4 as well as IPv6 is
expensive in terms of scalability (in addition to in terms of operational
cost, which is true everywhere). In those networks, it's much cheaper to
run IPv4 over IPv6 as opposed to IPv4 as well as IPv6. This is why 464xlat
exists.
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