[143383] in North American Network Operators' Group
Re: IPv6 end user addressing
daemon@ATHENA.MIT.EDU (Owen DeLong)
Mon Aug 8 16:56:36 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <alpine.BSF.2.00.1108081008390.92591@mignon.ki.iif.hu>
Date: Mon, 8 Aug 2011 13:51:32 -0700
To: Mohacsi Janos <mohacsi@niif.hu>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Aug 8, 2011, at 1:15 AM, Mohacsi Janos wrote:
>=20
>=20
> On Fri, 5 Aug 2011, 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
> For business customers I would give /48 and home users who might have =
1-2 subnet I would give /56 or /60.
> Reasons:
> - Business customers night grow where you have to provide bigger =
amount of subnet - allow space for future extension -
>=20
> - Home users - they usually don't know what is subnet. Setting up =
different subnets in their SOHO router can be difficult. Usually the =
simple 1 subnet for every device is enough for them. Separating some =
devices into a separate subnets is usually enough for the most =
sophisticated home users. If not then he can opt for business service=85.=
>=20
This utterly ignores the reality of DHCPv6, DHCP-PD, and technologies =
currently being developed for rational automatic hierarchies of =
topology.
Owen
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