[151008] in North American Network Operators' Group
Re: filtering /48 is going to be necessary
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Mar 9 18:08:13 2012
From: Owen DeLong <owen@delong.com>
In-Reply-To: <201203092207.WAA09178@sunf10.rd.bbc.co.uk>
Date: Fri, 9 Mar 2012 15:05:13 -0800
To: Brandon Butterworth <brandon@rd.bbc.co.uk>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Mar 9, 2012, at 2:07 PM, Brandon Butterworth wrote:
>> From: Owen DeLong <owen@delong.com>
>>> We had this discussion on the list exactly a year ago. At that =
time,
>>> the average IPv6 origin ASN was announcing 1.43 routes. That figure
>>> today is 1.57 routes per origin ASN.
>>=20
>> That represents a 10% growth in prefix/asn for IPv6.
>>=20
>> Compare to 9.3->9.96/ASN (7%) in IPv4 over that same time, While
>> I would agree that this is a trend that merits watching, I think
>> we're probably OK for quite some time.
>=20
> By the time it's a problem it'll not be fixable.
>=20
> I've been a supporter of classful allocation of v6 such as Bill =
mentioned
> (http://lists.arin.net/pipermail/arin-ppml/2009-November/015521.html)
> there's enough space for it but people don't want to do classful =
again.
>=20
> If there isn't standard filtering of defined prefix/lengths by major
> carriers then we're just waiting for the problem to arrive. I don't
> think we'd get enough people to agree on this to avoid it.
>=20
> brandon
My opposition to this ill-conceived idea has nothing to do with favor of =
nor opposition to classful addressing.
My opposition comes from the fact that this could very easily become an =
additional tool used by larger players in the peering wars to =
disadvantage smaller players. Handing one side an RIR-sponsored tactical =
nuclear weapon is, IMHO, on the face of it a bad idea. The proposal for =
classful allocation that Bill floated in the thread above would =
constitute doing exactly that. If you will review the thread, you will =
find that is my stated reason for opposition at the time as well.
Owen
