[175069] in North American Network Operators' Group
Re: IPv6 Default Allocation - What size allocation are you giving out
daemon@ATHENA.MIT.EDU (Mark Andrews)
Thu Oct 9 00:45:34 2014
X-Original-To: nanog@nanog.org
To: Faisal Imtiaz <faisal@snappytelecom.net>
From: Mark Andrews <marka@isc.org>
In-reply-to: Your message of "Thu, 09 Oct 2014 04:32:39 -0000."
<482678376.131852.1412829159356.JavaMail.zimbra@snappytelecom.net>
Date: Thu, 09 Oct 2014 15:40:07 +1100
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
In message <482678376.131852.1412829159356.JavaMail.zimbra@snappytelecom.net>,
Faisal Imtiaz writes:
> > A /60, /56, /52 or /48 allows the client to run multiple SLAAC
> > subnets (16, 256, 4096 or 65536) and to have the reverse ip6.arpa
> > zone delegated on a nibble boundary.
>
> Understood...
>
> > There is plenty of address space even handing out /48's to everyone.
>
> Also Understood.
>
> >Only short sighted ISP's hand out /56's to residential customers.
>
> I am curious as to why you say it is short sighted? what is the technical or
> otherwise any other reasoning for such statement ?
256 is *not* a big number of subnets. By restricting the number
of subnets residences get you restrict what developers will design
for. Subnets don't need to be scares resource. ISP's that default to
/56 are making them a scares resource.
Mark
> Faisal Imtiaz
> Snappy Internet & Telecom
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
