Re: [DNSOP] Fwd: New Version Notification for draft-sury-deprecate-obsolete-resource-records-00.txt
Viktor Dukhovni <ietf-dane@dukhovni.org> Sat, 24 March 2018 17:22 UTC
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From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Subject: Re: [DNSOP] Fwd: New Version Notification for draft-sury-deprecate-obsolete-resource-records-00.txt
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On Sat, Mar 24, 2018 at 02:58:55PM +0000, Jim Reid wrote: > IMO there's no need to do this in the protocol unless there is convincing > proof that nobody anywhere is using a now-obsolete RRtype. An RFC saying > a server could return FORMERR (or whatever) when it gets a query for one > of these dead/zombie QTYPEs might be OK I suppose. Absolutely no! *THAT* would add substantial run-time complexity for no reason, achieving the opposite of any simplification that might result from dropping support for the RRtype. If there's no such data in your zone, return NODATA or NXDOMAIN as appropriate. If there is such data, return that data. This would be grossly misguided. Perhaps time to reread: https://tools.ietf.org/html/draft-ietf-dnsop-no-response-issue-08 As for removing parsing code from tools, I sympathise with the view that this does not remove much complexity that matters. The complexity we really should care about is wire (protocol) complexity, not tool complexity. One might say that *new* tools may skip implementing obsolete RRtypes, and that users should avoid new uses of obsolete RRtypes, but there's not IMHO much impetus for removing support from existing tools. That said, legacy code has some costs, and one should attempt to eventually shed bits nobody uses. So while I agre that the priorities are elsewhere, this too is something one might eventually pay attention to. So I am not opposed to dropping parser support for essentially unused types. It just needs to be down with care, first issue deprecation warnings for a few releases, then if there are few enough complaints, remove support. -- Viktor.
- [DNSOP] Fwd: New Version Notification for draft-s… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Martin Hoffmann
- Re: [DNSOP] Fwd: New Version Notification for dra… Matthijs Mekking
- Re: [DNSOP] Fwd: New Version Notification for dra… Mukund Sivaraman
- Re: [DNSOP] Fwd: New Version Notification for dra… Bob Harold
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… Bob Harold
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… Bob Harold
- Re: [DNSOP] Fwd: New Version Notification for dra… Paul Vixie
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… Paul Vixie
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… Paul Vixie
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… P Vix
- Re: [DNSOP] Fwd: New Version Notification for dra… Dick Franks
- Re: [DNSOP] Fwd: New Version Notification for dra… Jared Mauch
- Re: [DNSOP] Fwd: New Version Notification for dra… Joe Abley
- Re: [DNSOP] Fwd: New Version Notification for dra… Jim Reid
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… Viktor Dukhovni
- Re: [DNSOP] Fwd: New Version Notification for dra… Matthew Pounsett
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Mukund Sivaraman
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] Fwd: New Version Notification for dra… Evan Hunt
- Re: [DNSOP] New Version Notification for draft-su… Paul Hoffman
- Re: [DNSOP] Fwd: New Version Notification for dra… Paul Wouters
- Re: [DNSOP] Fwd: New Version Notification for dra… Matthijs Mekking
- Re: [DNSOP] Fwd: New Version Notification for dra… Paul Vixie
- Re: [DNSOP] Fwd: New Version Notification for dra… Shane Kerr
- Re: [DNSOP] New Version Notification for draft-su… Evan Hunt
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Evan Hunt
- Re: [DNSOP] Fwd: New Version Notification for dra… Tony Finch
- Re: [DNSOP] Fwd: New Version Notification for dra… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Michael Casadevall
- Re: [DNSOP] Fwd: New Version Notification for dra… Dick Franks
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Jim Reid
- Re: [DNSOP] New Version Notification for draft-su… Evan Hunt
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Paul Vixie
- Re: [DNSOP] Fwd: New Version Notification for dra… Paul Vixie
- Re: [DNSOP] New Version Notification for draft-su… Michael Casadevall
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Paul Vixie
- Re: [DNSOP] New Version Notification for draft-su… Richard Gibson
- Re: [DNSOP] New Version Notification for draft-su… Michael Casadevall
- Re: [DNSOP] New Version Notification for draft-su… Dick Franks
- Re: [DNSOP] New Version Notification for draft-su… Paul Vixie
- Re: [DNSOP] New Version Notification for draft-su… Dick Franks
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý
- Re: [DNSOP] New Version Notification for draft-su… Robert Edmonds
- Re: [DNSOP] New Version Notification for draft-su… Evan Hunt
- Re: [DNSOP] New Version Notification for draft-su… Wessels, Duane
- Re: [DNSOP] New Version Notification for draft-su… william manning
- Re: [DNSOP] New Version Notification for draft-su… william manning
- Re: [DNSOP] New Version Notification for draft-su… Ondřej Surý