[159725] in North American Network Operators' Group

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

daemon@ATHENA.MIT.EDU (William Herrin)
Fri Jan 18 17:05:56 2013

In-Reply-To: <50F9C2A2.7090300@vaxination.ca>
From: William Herrin <bill@herrin.us>
Date: Fri, 18 Jan 2013 17:00:14 -0500
To: Jean-Francois Mezei <jfmezei_nanog@vaxination.ca>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On Fri, Jan 18, 2013 at 4:46 PM, Jean-Francois Mezei
<jfmezei_nanog@vaxination.ca> wrote:
> Should NAT become prevalent and prevent innovation because of its
> limitations, this means that innovation will happen only with IPv6 which
> means the next "must have" viral applications will require IPv6 and this
> may spur the move away from an IPv4 that has been crippled by NAT
> everywhere.

It won't happen and I'll tell you why not.

Client to client communication block diagrams:

Without NAT:
Client->Router->Router->Router->Router->Router->Client

With NAT:
Client->Router->Router->Relay->Router->Router->Client

At a high level, the two communication diagrams are virtually identical.

Add killer app. By it's nature, a killer app is something folks will
pay good money for. This means that 100% of killer apps have
sufficient funding to install those specialty relays.

Odds of a killer app where one router can't be replaced with a
specialty relay while maintaining the intended function: not bloody
likely.

Regards,
Bill Herrin


-- 
William D. Herrin ................ herrin@dirtside.com  bill@herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004


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