nanog mailing list archives

Re: 240/4


From: "Brandon Galbraith" <brandon.galbraith () gmail com>
Date: Thu, 18 Oct 2007 15:17:37 -0500

On 10/18/07, Alain Durand <alain_durand () cable comcast com> wrote:


On 10/18/07 12:53 PM, "Jon Lewis" <jlewis () lewis org> wrote:

I could see bits of 240/4 perhaps being of use to large cable companies
for whom there just isn't enough 1918 space to address all their CPE
gear...and/or they really want unique addressing so that if/when
networks
merge IP conflicts are avoided.

I do work for one of those "large cable companies" and no, 240/4 is not
useable for us either for the exact same reasons that you pointed out to
explain why 240/4 will not work in public space: there are just too many
devices that can't easily be upgraded.

   - Alain.


Alain,

Correct me if I'm wrong, but Comcast started moving to IPv6 addressing
*because* they ran out of 10. space.

My 0.02: Hacking together IPv4 solutions involving retasking previously
reserved address space simply delays the inevitable exhaustion of said
address space.

-brandon

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