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Re: [Sidrops] WGLC for draft-ietf-sidrops-ov-egress-00.txt - ENDS 11/25/2019 (November 25 2019)

"Borchert, Oliver (Fed)" <oliver.borchert@nist.gov> Mon, 02 December 2019 22:33 UTC

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From: "Borchert, Oliver (Fed)" <oliver.borchert@nist.gov>
To: Randy Bush <randy@psg.com>, "Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov>
CC: "sidrops-chairs@ietf.org" <sidrops-chairs@ietf.org>, "keyur@arrcus.com" <keyur@arrcus.com>, "sidrops@ietf.org" <sidrops@ietf.org>, "draft-ietf-sidrops-ov-egress@ietf.org" <draft-ietf-sidrops-ov-egress@ietf.org>, Chris Morrow <morrowc@ops-netman.net>, Jeffrey Haas <jhaas@pfrc.org>, "Borchert, Oliver (Fed)" <oliver.borchert@nist.gov>
Thread-Topic: [Sidrops] WGLC for draft-ietf-sidrops-ov-egress-00.txt - ENDS 11/25/2019 (November 25 2019)
Thread-Index: AQHVpWgSEBZM4zsUfES1xVtq6IDBOKeluvoAgAAJRgCAAA5hAIAAOJAAgAABtACAARVcgA==
Date: Mon, 02 Dec 2019 22:32:58 +0000
Message-ID: <9AEB8712-8C36-4831-B119-87334D74CA59@nist.gov>
References: <87tv6jbyjd.wl-morrowc@ops-netman.net> <25CB2E64-D0B5-4D5F-A59F-4864D1C340E7@psg.com> <m2blsr1qzl.wl-randy@psg.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/sidrops/cbPsyg49qZQgWQPEMEXIR5pV1vs>
Subject: Re: [Sidrops] WGLC for draft-ietf-sidrops-ov-egress-00.txt - ENDS 11/25/2019 (November 25 2019)
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    >> The operator knows their complex policies and can determine
    >> the origin AS that would result after the policies are applied.
    
    >no.  that is point.  as stated before, exogenous data can make the
    >result not deteminable from analysis of the configuration.
 
Hi Randy,

I am somewhat puzzled, could you elaborate more what you mean by "exogenous data". 
Also I still don't see the "non-deteminable" aspect?

A clear example would be very helpful to understand what you mean,

Thanks,
Oliver

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