[45195] in North American Network Operators' Group
Re: traffic filtering
daemon@ATHENA.MIT.EDU (Stephen Griffin)
Mon Jan 21 19:00:22 2002
Message-Id: <200201212343.SAA10700@elektra.ultra.net>
In-Reply-To: <20020121230144.GC4644@puck.nether.net> from Jared Mauch at "Jan 21, 2002 06:01:44 pm"
To: jared@puck.nether.net (Jared Mauch)
Date: Mon, 21 Jan 2002 18:43:07 -0500 (EST)
From: Stephen Griffin <stephen.griffin@rcn.com>
Cc: stephen.griffin@rcn.com, nanog@merit.edu
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In the referenced message, Jared Mauch said:
> On Mon, Jan 21, 2002 at 05:53:16PM -0500, Stephen Griffin wrote:
> >
> > Hello,
> >
> > I'm curious about how many networks completely filter all traffic to
> > any ip address ending in either ".0" or ".255".
>
> they will have problems reaching people who are now using /31s
> on links that cover the last /31 and first /31 of the /24 that they reside
> in.
>
> - Jared
or (as in my case) router loopbacks using a /32 with .0 or .255, or
dialup users allocated out of a /21 pool, where any but the first .0
and last .255 are legitimate (technically, with dialup if they are
allocated as /32's they are all legitimate). Or any lan larger than
a /24.
