nanog mailing list archives

Re: traffic filtering


From: Stephen Griffin <stephen.griffin () rcn com>
Date: Mon, 21 Jan 2002 18:43:07 -0500 (EST)


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.


Current thread: