estimation of number of DFZ IPv4 routes at peak in the future

John Curran jcurran at
Wed Mar 9 08:32:41 CST 2011

On Mar 9, 2011, at 12:43 AM, Majdi S. Abbas wrote:
> On Wed, Mar 09, 2011 at 12:44:05PM +0900, Randy Bush wrote:
>> i am more of a pessimist.  i suspect that there will be enough v4-only
>> destinations out there that multi-homed enterprises fronting onto 
>> dual-stack backbones will announce teenie bits of v4 so they can nat64.
>    I'll take this one a little further.
>    I suspect that as we reach exhaustion, more people will be
> forced to break space out of their provider's v4 aggregates, and
> announce them, and an unfiltered DFZ may well approach the 'million'
> entries some vendors now claim to support.

This matches my personal view (and could be viewed as 
"success" compared to the 5M estimate of Mr. Herrin...)


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