Re: [DNSOP] Where in a CNAME chain is the QNAME?

Robert Edmonds <edmonds@mycre.ws> Thu, 29 September 2016 15:02 UTC

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Date: Thu, 29 Sep 2016 11:01:43 -0400
From: Robert Edmonds <edmonds@mycre.ws>
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Subject: Re: [DNSOP] Where in a CNAME chain is the QNAME?
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Paul Hoffman wrote:
> Oddly, "owner name" is correct here. From RFC 1035, Section 3.2.1 which
> describes the format of resource records:

Compare that section to the nearly identical §4.1.3, which replaces this
sentence:

    All RRs have the same top level format shown below:

with:

    The answer, authority, and additional sections all share the same
    format: a variable number of resource records, where the number of
    records is specified in the corresponding count field in the header.
    Each resource record has the following format:

But, the "All RRs" part of §3.2.1 is still accurate, because an entry in
the question section is not a RR.

There are some other differences between §3.2.1 and §4.1.3, for instance
§3 uses "owner name" while §4 uses "domain name" to describe the NAME
field, and the infamous signed vs. unsigned definition of the TTL field.

-- 
Robert Edmonds