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Re: [**EXTERNAL**] Re: the race to the bottom problem

"Mudric, Dusan" <dmudric@ciena.com> Fri, 06 November 2020 23:29 UTC

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From: "Mudric, Dusan" <dmudric@ciena.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>, Bob Hinden <bob.hinden@gmail.com>
CC: "draft-mishra-6man-variable-slaac@ietf.org" <draft-mishra-6man-variable-slaac@ietf.org>, 6man <ipv6@ietf.org>
Subject: Re: [**EXTERNAL**] Re: the race to the bottom problem
Thread-Topic: [**EXTERNAL**] Re: the race to the bottom problem
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Date: Fri, 06 Nov 2020 23:29:38 +0000
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Should be a way to implement the prefix limitation in the service contract for the uplink to ISP. 

Dusan

On 2020-11-06, 6:20 PM, "Brian E Carpenter" <brian.e.carpenter@gmail.com> wrote:

On 07-Nov-20 12:08, Mudric, Dusan wrote:
> The first sentence is taken out of the context. I actually said:
> 
> "- There is no race to the bottom. We are not trying to solve ISP problem by allowing longer than 64bit prefixes,
> - It is not about restricting the ISP prefix assignments to minimum one 64bit prefix, by imposing 64bit SLAAC prefix limitation on the clients,
> - Minimum of one 64bit prefix limitation should be imposed by other network elements, rather than clients. Edge routers can block >64bit prefixes,"
> 
> because I believe the race to the bottom can be addressed by other network elements (e.g. CE), not only clients.

But the consumer CE is very often supplied by the ISP, and it therefore does what the ISP wants. If that's different from what an RFC says, it's the ISP that wins.

   Brian

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