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Re: [Gen-art] Gen-ART Last Call review of draft-ietf-dice-profile-14

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 09 September 2015 20:14 UTC

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To: "FOSSATI, Thomas (Thomas)" <thomas.fossati@alcatel-lucent.com>, "draft-ietf-dice-profile.all@ietf.org" <draft-ietf-dice-profile.all@ietf.org>, General Area Review Team <gen-art@ietf.org>
References: <55E63507.40404@gmail.com> <D215A6A7.343D6%thomas.fossati@alcatel-lucent.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Thu, 10 Sep 2015 08:14:05 +1200
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Subject: Re: [Gen-art] Gen-ART Last Call review of draft-ietf-dice-profile-14
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On 09/09/2015 20:07, FOSSATI, Thomas (Thomas) wrote:
> Hi Brian,
> 
> On 02/09/2015 00:30, "Brian E Carpenter" <brian.e.carpenter@gmail.com<mailto:brian.e.carpenter@gmail.com>> wrote:
> Minor Issues:
> -------------
> 
> "  Figure 7 shows an example interaction... The IPv6
>    multicast address used for site-local discovery is FF02::FD."
> 
> Where does ff02::fd come from? Is it just used as an example? That isn't clear
> in the text. (IANA lists it as "variable scope allocation".)
> 
> FF02::FD is the link-local "all CoAP Nodes" (see https://tools.ietf.org/html/rfc7252#section-12.8 and http://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml).

Oh. I find the registry very confusing. It would help ignorant people like
me if the sentence read

"The IPv6 multicast address used for CoAP site-local discovery is FF02::FD."

except that there *is* a bug in that sentence: ff02:: is the link-local range,
site-local would be ff05::fd. So it should be

"The IPv6 multicast address used for CoAP link-local discovery is FF02::FD."

Thanks
    Brian

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