Re: [dhcwg] Last Call: <draft-ietf-dhc-anonymity-profile-06.txt> (Anonymity profile for DHCP clients) to Proposed Standard

Hi,

> -----Original Message-----
> From: dhcwg [mailto:dhcwg-bounces@ietf.org] On Behalf Of ????
> Sent: Friday, February 12, 2016 11:26 AM
> To: ietf@ietf.org
> Cc: draft-ietf-dhc-anonymity-profile@ietf.org; dhc-chairs@ietf.org; Bernie Volz (volz); IETF-Announce; dhcwg@ietf.org
> Subject: Re: [dhcwg] Last Call: <draft-ietf-dhc-anonymity-profile-06.txt> (Anonymity profile for DHCP clients) to Proposed Standard
> 
> On Mon, Feb 1, 2016 at 6:24 AM, The IESG <iesg-secretary@ietf.org> wrote:
> 
> > The IESG has received a request from the Dynamic Host Configuration WG
> > (dhc) to consider the following document:
> > - 'Anonymity profile for DHCP clients'
> >   <draft-ietf-dhc-anonymity-profile-06.txt> as Proposed Standard
> >
> > The IESG plans to make a decision in the next few weeks, and solicits
> > final comments on this action. Please send substantive comments to the
> > ietf@ietf.org mailing lists by 2016-02-15. Exceptionally, comments may be
> > sent to iesg@ietf.org instead. In either case, please retain the
> > beginning of the Subject line to allow automated sorting.
> 
> Brian Carpenter called for an attention to Section 4.5.2 of the draft:
> https://mailarchive.ietf.org/arch/msg/ipv6/J_SnGxd2JunlpOeL4JprV03UA7s
> 
> so I'm responding to it.
> 
> 4.5.2.  Prefix delegation
> 
>    The interaction between prefix delegation and anonymity require
>    further study.  For now, the simple solution is to avoid using prefix
>    delegation when striving for anonymity.  When using the anonymity
>    profiles, clients SHOULD NOT use IA_PD, the prefix delegation form of
>    address assignment.
> 
> I'm not sure what Brian tried to indicate in his message, but at least
> this section looks vague to me about the rationale for the "SHOULD
> NOT".  It's not obvious to me how IA_PD is worse than IA_NA in terms
> of privacy.  Is this a "SHOULD NOT" simply because the "interaction"
> (is not yet fully understood and) requires further study?

I don't have a strong opinion on the "SHOULD NOT" in this paragraph, but
it is very important that this guidance not be taken out of context. This
document is only about clients that wish to remain anonymous, which
does not apply to all use cases.

Thanks - Fred
fred.l.templin@boeing.com

> --
> JINMEI, Tatuya
> 
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