Re: [v6ops] [dhcwg] SLAAC renum: Problem Statement & Operational workarounds

Ted Lemon <mellon@fugue.com> Wed, 30 October 2019 22:43 UTC

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From: Ted Lemon <mellon@fugue.com>
In-Reply-To: <8755B40E-4075-4AAC-BF59-19B6DF9BA6D1@cisco.com>
Date: Wed, 30 Oct 2019 18:43:17 -0400
Cc: Bud Millwood <budm@weird-solutions.com>, "dhcwg@ietf.org" <dhcwg@ietf.org>, IPv6 Operations <v6ops@ietf.org>
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To: "Bernie Volz (volz)" <volz@cisco.com>
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Subject: Re: [v6ops] [dhcwg] SLAAC renum: Problem Statement & Operational workarounds
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On Oct 30, 2019, at 6:23 PM, Bernie Volz (volz) <volz@cisco.com> wrote:
> I should point out that having the dhcp server supply this information may not work all the time. It really depends on what configuration changes were made and the server implementation. And of course is useless if you “move” the CPE.

In this case the prefix would presumably no longer be valid; if it was valid and was offered as a deprecated prefix, it would cause no harm.

I am not suggesting that this should just start happening with no testing.   What I am suggesting is that forcing firmware updates on CPE routers isn’t something we should be as chary of as we used to be.