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

Ondřej Surý <ondrej@isc.org> Sun, 25 March 2018 05:19 UTC

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Date: Sun, 25 Mar 2018 07:19:08 +0200
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To: Dick Franks <rwfranks@gmail.com>
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Subject: Re: [DNSOP] New Version Notification for draft-sury-deprecate-obsolete-resource-records-00.txt
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Thanks Dick, this is very helpful suggestion and I’ll use it.

Ondrej
--
Ondřej Surý
ondrej@isc.org

> On 24 Mar 2018, at 00:06, Dick Franks <rwfranks@gmail.com>; wrote:
> 
> 
> On 23 March 2018 at 12:11, Ondřej Surý <ondrej@isc.org>; wrote:
> 
> this is a first attempt to start reducing the load on DNS Implementors and actually remove the stuff from DNS that’s not used and not needed anymore.
> 
> 
> I have no quarrel with the overall effect of this proposal, but the justifications are necessarily different for each category identified in RFC1035.
> 
>           3.3.4. MD RDATA format (Obsolete)
>           3.3.5. MF RDATA format (Obsolete)
> 
> These were already obsolete when RFC1035 was published and arguably should never have appeared at all.
> If these have not already been deprecated somewhere else, there is no plausible argument against doing so now. 
> 
> 
>           3.3.3. MB RDATA format (EXPERIMENTAL)
>           3.3.6. MG RDATA format (EXPERIMENTAL)
>           3.3.7. MINFO RDATA format (EXPERIMENTAL)
>           3.3.8. MR RDATA format (EXPERIMENTAL)
> 
> After 30 years, it seem clear that the "experiment" produced little or nothing of lasting value.  Plenty of word have been wasted in the past about open-ended experiments and unpublished results.  Deprecating these RRTYPES would put a formal end to the "experiment".  Any counter-argument needs to be justified by evidence of continuing use in the global internet, and made by the parties directly affected.  The "someone might be using it somewhere ..." argument is far from convincing.
> 
> 
>           3.4.2. WKS RDATA format
> 
> WKS is IPv4-specific, so the choice is ether to wait until IPv4 itself becomes deprecated, or to dispose of it now in the same manner as MB, MG etc.
> 
> 
>           3.2.3. QTYPE values
> 
> The intended meaning of MAILA is uncertain, but it is already declared by RFC1035 to be obsolete.
> 
> MAILB is a specific request for MB, MG, and MR records.
> 
> Both should also be deprecated by this document.
> 
> 
> 
> --DIck
> 
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