[106589] in North American Network Operators' Group
Re: Is it time to abandon bogon prefix filters?
daemon@ATHENA.MIT.EDU (Justin Shore)
Wed Aug 6 11:56:54 2008
Date: Wed, 06 Aug 2008 10:52:36 -0500
From: Justin Shore <justin@justinshore.com>
To: Randy Bush <randy@psg.com>
In-Reply-To: <4899BCB2.6050808@psg.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Randy Bush wrote:
> serious curiosity:
>
> what is the proportion of bad stuff coming from unallocated space vs
> allocated space? real measurements, please. and are there longitudinal
> data on this?
>
> are the uw folk, gatech, vern, ... measuring?
I still have 2 of my borders using an inbound ACL to filter BOGONs vs
null routes. For the ACLs I've broken down the BOGONs to nothing larger
than a /8. I see a number of hits on those entries, especially on 94/8.
and 0/8. While some of the other hits are accidental I'm sure, I
would seriously doubt if those 2 /8s are.
Justin
