[127327] in North American Network Operators' Group

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Re: Micro-allocation needed?

daemon@ATHENA.MIT.EDU (Florian Weimer)
Tue Jun 22 03:21:19 2010

To: Ask =?iso-8859-1?Q?Bj=F8rn?= Hansen <ask@develooper.com>
From: Florian Weimer <fweimer@bfk.de>
Date: Tue, 22 Jun 2010 07:20:59 +0000
In-Reply-To: <7F25AC8D-1330-41B1-815F-FEABD2EC6FA4@develooper.com> ("Ask
	=?iso-8859-1?Q?Bj=F8rn?= Hansen"'s message of "Mon\,
	21 Jun 2010 23\:42\:29 +0200")
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

* Ask Bj=F8rn Hansen:

> Are there (a significant number of) providers that will filter a /24
> announcement from an ARIN prefix not in the list of prefixes where
> they allocate /24 blocks.

I've seen such filters applied to RIPE's /8s which actually led to
reachability problems because the shorter covering prefix was not
announced.  (Arguably, that's two failures.)

--=20
Florian Weimer                <fweimer@bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstra=DFe 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99


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