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Re: [DNSOP] New Version Notification for draft-sury-deprecate-obsolete-resource-records-00.txt

Ondřej Surý <ondrej@isc.org> Sat, 24 March 2018 20:20 UTC

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From: Ondřej Surý <ondrej@isc.org>
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Date: Sat, 24 Mar 2018 21:20:06 +0100
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References: <152180695934.17546.2068402636242578841.idtracker@ietfa.amsl.com> <9CEA4F8F-4E71-4508-A088-103DD58F88E1@isc.org> <CA+nkc8DhXEEhiDqwHuA-_zNQc0n=rTZ-VZ6X8-0w-tY_0SC0eA@mail.gmail.com> <40ABB9EB-58EC-48FF-8117-60EE0E7006EF@isc.org> <CA+nkc8BfMKRUHuW+3EzOCeZHfmu1jeOgfVcszTbTYh9k2VTBcA@mail.gmail.com> <002DCABB-24CE-42FA-8DA6-2A458E5F89A1@isc.org> <5AB53F8B.9070504@redbarn.org> <7CF21F70-9419-4D6A-B555-FC229F90E8A9@isc.org> <5AB546CB.3030408@redbarn.org> <CCAE4014-67F8-4E73-A893-AA06B83E880B@isc.org> <20180324124958.GA29255@puck.nether.net> <CAJhMdTPRn=mUQ6xh_HFdFLBk109b_M2+saS86KFxsttb8_oVvw@mail.gmail.com> <4B5F0AAC-76CE-4A88-900D-2CA99993A9B6@rfc1035.com>
To: Jim Reid <jim@rfc1035.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/YLLnLF74AFGJhvTFdKHC3_Rkblg>
Subject: Re: [DNSOP] New Version Notification for draft-sury-deprecate-obsolete-resource-records-00.txt
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> It might be a different story if one of those zombie RRtypes required additional processing. None spring to mind though.

But (most of) those I picked actually *DO*:

a) compression is allowed, so compliant and non-compliant servers can’t speak together, because non-compliant will just store junk in the RDATA when received from compliant server;
b) the RDATA needs to be understood and lowercased for canonical form when DNSSEC signing; again you need to *implement* this in DNSSEC Validator as it would cause validation failures if you don't

And all this extra work must be done for RR Types that are unused in current protocols. The implementation for these M* types isn’t just wire<->human readable translation.

Ondrej
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Ondřej Surý
ondrej@isc.org

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