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Re: [DNSOP] [Ext] partial glue is not enough, I-D Action: draft-ietf-dnsop-glue-is-not-optional-00.txt

John R Levine <johnl@taugh.com> Sat, 04 July 2020 01:19 UTC

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Date: Fri, 03 Jul 2020 21:19:48 -0400
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From: John R Levine <johnl@taugh.com>
To: Brian Dickson <brian.peter.dickson@gmail.com>
Cc: "dnsop@ietf.org WG" <dnsop@ietf.org>
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Subject: Re: [DNSOP] [Ext] partial glue is not enough, I-D Action: draft-ietf-dnsop-glue-is-not-optional-00.txt
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> Uh, no. The TC flag means "something didn't fit".
> It is not restricted to glue, which is only in the additional section.
> TC can also be set if something from the authority section didn't fit, or
> if something didn't fit in the answer section.
> (Obviously it would be the first section where something didn't fit that
> matters.)

Well there's a question.  Is there any DNS software that will keeps adding 
new sections to a truncated answer, e.g., a partial authority section but 
it has some additional records anyway.  Seems unlikely but I honestly 
don't know.

In any event this whols plan still seems way overcomplicated.  In my 
simple world, you can tell that an answer is a referral because it has an 
empty answer section and an non-empty authority section.  A useful 
referral has some NS records in the authority section.

Let's see what other people think.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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