Re: 6MAN Working group last call: draft-ietf-6man-rdnss-rfc6106bis

"Mr. Jaehoon Paul Jeong" <jaehoon.paul@gmail.com> Tue, 22 March 2016 00:25 UTC

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From: "Mr. Jaehoon Paul Jeong" <jaehoon.paul@gmail.com>
Date: Tue, 22 Mar 2016 09:24:51 +0900
Message-ID: <CAPK2DeyB-4207sNm2Rtpq+GozvqF8y6y1h_gYzMN2aOHyEmffA@mail.gmail.com>
Subject: Re: 6MAN Working group last call: draft-ietf-6man-rdnss-rfc6106bis
To: Ole Troan <otroan@employees.org>
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Cc: Fernando Gont <fgont@si6networks.com>, 6man WG <ipv6@ietf.org>
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Ole,
I agree with you.
I will keep the original text in the revision for the coexistence of RA and
DHCP.

Thanks.

Best Regards,
Paul

On Fri, Mar 18, 2016 at 5:44 PM, <otroan@employees.org> wrote:

> Paul,
>
> > I took a look at the draft of
> https://www.ietf.org/id/draft-ietf-v6ops-dhcpv6-slaac-problem-06.txt.
> >
> > From Case 4 (all RA flags are set, that is, M=1, A=1, O=1) in A.2.2,
> > Fedora 21 and Centos 7 let the DNS of the RAs have higher priority, but
> > MAC OS-X lets the DNS of DHCPv6 have higher priority.
> > In the current implementations, there is no consistency to handle RDNSS
> options from RA and DHCPv6.
> >
> > Thus, I suggest the following text with the preference for DHCPv6 because
> > there is no a stong rationale, but there must be somehow a guidance to
> handle this case:
> >
> > The DNS options from Router Advertisements and DHCP SHOULD be
> > stored into the DNS Repository and Resolver Repository so that
> > information from DHCP appears there first and therefore takes
> > precedence. This document recommends that the DNS information
> > from DHCP should have higher priority than that of RA for
> > DNS queries to handle the case of the coexistence of RA and DHCP.
> >
> > If anyone does not object this text, I will revise the draft with it.
>
> I would prefer this document focused solely on specifying the RA DNS
> options, and did not stray into more general configuration complexity.
>
> getting information from multiple sources is a more general problem in
> IPv6, and I don't want us to "solve" (if that's possible) that problem in
> this document.
>
> "the less you say, the less likely you are to say something wrong". ;-)
>
> Best regards,
> Ole
>



-- 
===========================
Mr. Jaehoon (Paul) Jeong, Ph.D.
Assistant Professor
Department of Software
Sungkyunkwan University
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Email: jaehoon.paul@gmail.com, pauljeong@skku.edu
Personal Homepage: http://iotlab.skku.edu/people-jaehoon-jeong.php
<http://cpslab.skku.edu/people-jaehoon-jeong.php>