[117785] in North American Network Operators' Group
Re: Cogent leaking /32s?
daemon@ATHENA.MIT.EDU (ML)
Fri Oct 2 23:37:43 2009
Date: Fri, 02 Oct 2009 23:36:45 -0400
From: ML <ml@kenweb.org>
To: nanog@nanog.org
In-Reply-To: <20091002221747.GW51443@gerbil.cluepon.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Richard A Steenbergen wrote:
> On Fri, Oct 02, 2009 at 10:54:13AM -0500, Clue Store wrote:
>> Yes, I absolutely love the /24 filtering "everybody" does. Internet
>> littering at its best.
>>
>> http://thyme.apnic.net/current/data-badpfx-nos
>
> There is no rule that says you have to filter at /24, or that no other
> network may ever advertise something longer. This issue is probably best
> expressed as "you are highly unlikely to have full global Internet
> reachability if you announce something longer than a /24", not "you are
> highly unlikely to have anyone accept your announcement if it are longer
> than a /24".
>
Just to clarify it was a /32 for Cogent A/B peering. When I set it up
they didn't recommend setting no-export.
