The Choice: IPv4 Exhaustion or Transition to IPv6

Christian Kuhtz kuhtzch at
Fri Jun 29 13:37:23 UTC 2007

Until there's a practical solution for multihoming, this whole discussion is pretty pointless.

Sent from my BlackBerry.      

-----Original Message-----
From: Andy Davidson <andy at>

Date: Fri, 29 Jun 2007 14:27:33 
To:Donald Stahl <don at>
Cc:nanog at
Subject: Re: The Choice: IPv4 Exhaustion or Transition to IPv6

On 29 Jun 2007, at 14:24, Donald Stahl wrote:

>> That's the thing .. google's crawlers and search app runs at layer  
>> 7, v6 is an addressing system that runs at layer 3.  If we'd (the  
>> community) got everything right with v6, it wouldn't matter to  
>> Google's applications whether the content came from a site hosted  
>> on a v4 address, or a v6 address, or even both.
> If Google does not have v6 connectivity then how are they going to  
> crawl those v6 sites?

I think we're debating from very similar positions...

v6 isn't the ideal scenario of '96 extra bits for free', because if  
life was so simple, we wouldn't need to ask this question.


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