Re: [v6ops] A broken promise - "You said PD Prefix Valid Lifetime is going to be X"

Owen DeLong <owen@delong.com> Fri, 01 November 2019 16:43 UTC

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From: Owen DeLong <owen@delong.com>
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Date: Fri, 1 Nov 2019 09:42:22 -0700
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Subject: Re: [v6ops] A broken promise - "You said PD Prefix Valid Lifetime is going to be X"
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> So - TL;DR: We don't do "flash renumbering" for fun, on the other
> hand we also don't strictly follow RFC 4192.

Put another way, from the customer perspective…

“We don’t do flash renumbering for fun, but we do value our convenience
above the impact this has on our customers and therefore when we find it
convenient, we do flash renumber customers as needed.”

I’m not even saying this is necessarily an invalid approach. We all know
(or at least should know) that the margins in this industry don’t support
the cost involved in doing things differently, but, it does make a good
case for why we should be looking at ways to mitigate this issue because
in the real world, ISPs really do break DHCP lease promises on a regular
basis.

Owen

> 
> Steinar Haug, AS2116
> 
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