[36399] in North American Network Operators' Group

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Re: AS Leakage

daemon@ATHENA.MIT.EDU (bmanning@vacation.karoshi.com)
Wed Apr 4 16:39:58 2001

From: bmanning@vacation.karoshi.com
Message-Id: <200104042047.UAA25250@vacation.karoshi.com>
To: nanog@Overkill.EnterZone.Net (John Fraizer)
Date: Wed, 4 Apr 2001 20:47:59 +0000 (UCT)
Cc: cnielsen@nielsen.net (Christian Nielsen),
	tpugh@shore.net (Travis Pugh), nanog@merit.edu (Nanog mailing list)
In-Reply-To: <Pine.LNX.4.21.0104041601470.8024-100000@Overkill.EnterZone.Net> from "John Fraizer" at Apr 04, 2001 04:03:07 PM
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Errors-To: owner-nanog-outgoing@merit.edu


> 
> 
> On Wed, 4 Apr 2001, Christian Nielsen wrote:
> 
> > filtered. We saw providers leaking exchange point blocks, so we filtered.
> > we dont want to see _701_ from sprint or anyone except _701_, so we
> > filter. we do this for other large providers.
> > 
> 
> That's strange.  Your 701 connection goes down and you've filtered any
> backup route you had into them.  Good thinking.  
> 
> ---
> John Fraizer
> EnterZone, Inc
> 

AhHa!  the light dawns and Bill sees the error of his ways... and seeking
to banish the curse of ASSUMPTION, he points out to John that the statement;
"Your ... connection goes down ... you've filtered any backup route"
presuposes certain preexiting conditions.

	Please note Johns presumption of the singular.
	I expect the environment Christian is in may not
	suffer the presumption of singularity, at least 
	where such filtering is in place.

--bill


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