AT&T UVERSE Native IPv6, a HOWTO
jfbeam at gmail.com
Tue Dec 3 02:35:28 UTC 2013
On Mon, 02 Dec 2013 20:56:13 -0500, Leo Bicknell <bicknell at ufp.org> wrote:
> - A /56 is horribly wrong and the world will end if we don't fix it NOW.
I'm reminded of the Comcast trial deployments. Wasn't their conclusion
(with a collective thumbs up from the networking world) to go with /56?
Yet, even they are handing out little old /60's.
> I would love to know what number of home users need 256 subnets. The
> good news is that folks doing DHCP-PD will be able to report on how many
> people request all 256 networks available, and are thus "out". In fact
> they can make a histogram from 1 to 256 networks per household, and show
> us how many request each number of subnets.
It doesn't work that way. Routers aren't asking for individual prefixes
('tho I suppose it's possible.) They ask for a /60 or /56, and then assign
the space as necessary. Thus, the ISP has no idea how many /64's are
actually being used.
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