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Re: 6MAN WG Adoption call : draft-jeong-6man-rdnss-rfc6106-bis

Ole Troan <otroan@employees.org> Wed, 22 July 2015 07:42 UTC

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Subject: Re: 6MAN WG Adoption call : draft-jeong-6man-rdnss-rfc6106-bis
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From: Ole Troan <otroan@employees.org>
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Date: Wed, 22 Jul 2015 09:42:38 +0200
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To: Mark ZZZ Smith <markzzzsmith@yahoo.com.au>
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Mark,

I see the problem now. this text in 6106 states:

Note:  An RDNSS address or a DNSSL domain name MUST be used only as
      long as both the RA router Lifetime (advertised by a Router
      Advertisement message [RFC4861]) and the corresponding option
      Lifetime have not expired.  The reason is that in the current
      network to which an IPv6 host is connected, the RDNSS may not be
      currently reachable, that the DNSSL domain name is not valid any
      more, or that these options do not provide service to the host's
      current address (e.g., due to network ingress filtering
      [RFC2827][RFC5358]).

I can understand the reasoning behind putting that text in there, but I agree with you that it is too strong. I would suggest removing that paragraph and declare this an application (DNS) problem. the RDNSS list is not guaranteed to be reachable at any point in time.

cheers,
Ole

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