[143323] in North American Network Operators' Group
Re: IPv6 end user addressing
daemon@ATHENA.MIT.EDU (Owen DeLong)
Sat Aug 6 05:12:01 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <005f01cc53c2$e52b4200$af81c600$@iname.com>
Date: Sat, 6 Aug 2011 02:06:46 -0700
To: <frnkblk@iname.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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I'm not the only person who prefers /48 and hopefully most ISPs will =
eventually
come around and realize that /56s don't really benefit anyone vs. /48s.
Hurricane Electric has been handing out /48s upon request to our =
customers and
users of our IPv6 tunnel services. We do not anticipate changing that =
policy.
Owen
On Aug 5, 2011, at 3:56 PM, Frank Bulk wrote:
> Let's clarify -- /48 is much preferred by Owen, but most ISPs seem to =
be
> zeroing in on a /56 for production. Though some ISPs are using /64 =
for
> their trials.
>=20
> Frank
>=20
> -----Original Message-----
> From: Owen DeLong [mailto:owen@delong.com]=20
> Sent: Friday, August 05, 2011 12:21 PM
> To: Brian Mengel
> Cc: nanog@nanog.org
> Subject: Re: IPv6 end user addressing
>=20
> /56 is definitely preferable to /64, but, /48 really is a better =
choice.
>=20
> /56 is very limiting for autonomous hierarchical deployments.
>=20
> It's not about number of subnets. It's about the ability to provide =
some
> flexibility
> in the breadth and depth of bit fields used for creating hierarchical
> topologies
> automatically.
>=20
> Owen
>=20
> On Aug 5, 2011, at 9:17 AM, Brian Mengel wrote:
>=20
>> In reviewing IPv6 end user allocation policies, I can find little
>> agreement on what prefix length is appropriate for residential end
>> users. /64 and /56 seem to be the favorite candidates, with /56 =
being
>> slightly preferred.
>>=20
>> I am most curious as to why a /60 prefix is not considered when =
trying
>> to address this problem. It provides 16 /64 subnetworks, which seems
>> like an adequate amount for an end user.
>>=20
>> Does anyone have opinions on the BCP for end user addressing in IPv6?
>=20
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