Re: [v6ops] Benjamin Kaduk's No Objection on draft-ietf-v6ops-cpe-slaac-renum-07: (with COMMENT)

Fernando Gont <fgont@si6networks.com> Thu, 25 February 2021 22:29 UTC

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To: "Bernie Volz (volz)" <volz=40cisco.com@dmarc.ietf.org>, Benjamin Kaduk <kaduk@mit.edu>, The IESG <iesg@ietf.org>
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From: Fernando Gont <fgont@si6networks.com>
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Date: Thu, 25 Feb 2021 19:21:43 -0300
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Subject: Re: [v6ops] Benjamin Kaduk's No Objection on draft-ietf-v6ops-cpe-slaac-renum-07: (with COMMENT)
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On 25/2/21 19:08, Bernie Volz (volz) wrote:
> I’m somewhat fine with your text.
> 
> The “unless the CE Router implements [RFC7844].” seems like something 
> one could drive a truck through? What part(s) of [RFC7844] are you 
> talking about (perhaps the text in section 4.5 and referencing it might 
> be best here). Perhaps, “unless the CE Router implements the IAID 
> techniques discussed in Section 4.5 of [RFC7844].” (or something like that).

Based on a quick read of RFC7844, it seems it implies:
* MAC randomization
* DUID based on the MAC adresses (hence changing)
* Changing IAID in response to MAC address changes.


So it seems that when a new mac address is randomized, all three values 
change....


-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
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