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RE: default-iids: dropping requirement 1 in Section 3

"Manfredi, Albert E" <albert.e.manfredi@boeing.com> Fri, 20 May 2016 23:23 UTC

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From: "Manfredi, Albert E" <albert.e.manfredi@boeing.com>
To: Alissa Cooper <alissa@cooperw.in>, IETF IPv6 Mailing List <ipv6@ietf.org>
Subject: RE: default-iids: dropping requirement 1 in Section 3
Thread-Topic: default-iids: dropping requirement 1 in Section 3
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Date: Fri, 20 May 2016 23:23:22 +0000
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> -----Original Message-----
> From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Alissa Cooper

> > What if we dropped requirement #1 in Section 3, but left the rest the same?
> This would open the door such that people who wanted to comply with the
> SHOULD-level recommendation in this spec in the presence of randomized MAC
> addresses still could (e.g., by implementing 7217 and using the randomized
> MAC as the Net_Iface parameter), but directly embedding a MAC address in the
> IID would still go against the SHOULD NOT recommendation here.
> 
> I don’t think I saw anyone respond to this suggestion, so I’d like to ask
> again for people’s opinions about this.
> 
> To my eye this is a nice compromise.

Alissa, I'm starting to think that SLAAC is analogous to diesel engines. Everyone thought it was a great idea for the longest time, and now it's getting a bad rap.

The requirement in Section 3 #1 still has to hold, for any form of stable address developed with SLAAC, I would think. If one reboots the host, the address on that subnet has to reappear as it was before. If you drop the requirement, people will just assume that it's obvious anyway, I would think.

Bert

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