[137773] in North American Network Operators' Group
Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6
daemon@ATHENA.MIT.EDU (Benson Schliesser)
Fri Feb 18 18:10:47 2011
From: Benson Schliesser <bensons@queuefull.net>
In-Reply-To: <7B0A68EE-7E63-4768-816D-9DC491346033@delong.com>
Date: Fri, 18 Feb 2011 17:07:30 -0600
To: Owen DeLong <owen@delong.com>
Cc: nanog@merit.edu, Zed Usser <zzuser@yahoo.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Feb 18, 2011, at 4:46 PM, Owen DeLong wrote:
> On Feb 18, 2011, at 2:26 PM, Benson Schliesser wrote:
>> The document is titled "Assessing the Impact of NAT444 on Network =
Applications" and it claims to discuss NAT444 issues. However, it =
conflates NAT444 with CGN. And it is often used as an explanation for =
supporting alternative technology such as DS-lite, even though DS-lite =
also leverages CGN. This line of reasoning is broken and, as I've =
stated already, I'm waiting for somebody to offer evidence that NAT444 =
is more problematic than CGN.
>>=20
> NAT444 is one implementation of CGN and the issues it describes all =
apply to NAT444.
>=20
> It does not claim that it discusses issues unique to NAT444. It claims =
that all of the issues it discusses
> apply to NAT444. That claim is accurate.
You continue to conflate NAT444 and CGN. I'm not sure I can say =
anything that hasn't already been said, but perhaps an example will =
help:
Broken DNS will result in problems browsing the web. That doesn't make =
it accurate to claim that the web is broken, and it's particularly weak =
support for claims that email would work better.
>> Yes. And today's customers enjoy being able to communicate with the =
IPv4 Internet. CGN may be sub-optimal, but it's the lesser of two evils =
(disconnection being the other choice).
>>=20
> I remain unconvinced of the accuracy of this statement.
Well, if your user does nothing but send email then perhaps even UUCP =
would be good enough. But for the rest of us, until IPv6 penetration =
reaches all the content/services we care about, we need dual v4+v6 =
connectivity.
Cheers,
-Benson
