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Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6

daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Jan 18 13:03:12 2013

In-Reply-To: <50F98AE2.9090001@ttec.com>
From: Owen DeLong <owen@delong.com>
Date: Fri, 18 Jan 2013 07:57:34 -1000
To: Joe Maimon <jmaimon@ttec.com>
Cc: North American Network Operators' Group <nanog@nanog.org>,
 "Constantine A. Murenin" <mureninc@gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org



Sent from my iPad

On Jan 18, 2013, at 7:48 AM, Joe Maimon <jmaimon@ttec.com> wrote:

>=20
>=20
> Lee Howard wrote:
>=20
>> You are welcome to deploy it if you choose to.
>> Part of the reason I'm arguing against it is that if everyone deploys it,=

>> then everyone has to deploy it.  If it is seen as an alternative to IPv6
>> by some, then others' deployment of IPv6 is made less useful: network
>> effect.  Also, spending money on CGN seems misguided; if you agree that
>> you're going to deploy IPv6 anyway, why spend the money for IPv6 *and
>> also* for CGN?
>>=20
>>=20
>> Lee
>=20
> Suppose a provider fully deploys v6, they will still need CGN so long as t=
hey have customers who want to access the v4 internet.
>=20

Actually, NAT64/DNS64 is a much better alternative in that situation. The bi=
gger issue is customers who still have v4-only devices and some reasonable e=
xpectation that those will
continue to be supported.

> Unfortunately, that may have the side effect of undercutting some portion o=
f v6's value proposition, inversely related to its suckage.

Which is why I consider the consumer electronics industry to be the importan=
t frontier in getting IPv6 support at this point. All of these smart TVs, DV=
D players, receivers, etc. that don't support IPv6 are going to be the real p=
roblem in deploying non-IPv4 service to residential customers in the coming y=
ears.

Owen



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