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Re: [DNSOP] DNS Terminology: Glue

Casey Deccio <casey@deccio.net> Fri, 13 March 2015 20:14 UTC

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Date: Fri, 13 Mar 2015 16:13:56 -0400
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From: Casey Deccio <casey@deccio.net>
To: Paul Hoffman <paul.hoffman@vpnc.org>
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Cc: Tony Finch <dot@dotat.at>, IETF DNSOP WG <dnsop@ietf.org>
Subject: Re: [DNSOP] DNS Terminology: Glue
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On Thu, Mar 12, 2015 at 2:10 PM, Paul Hoffman <paul.hoffman@vpnc.org> wrote:

> On Mar 12, 2015, at 10:59 AM, Tony Finch <dot@dotat.at> wrote:
> >
> > Patrik Wallström <pawal@blipp.com> wrote:
> >>
> >> Glue Name Records are defined as all NS records pertaining to the child
> >> domain that are delivered by the nameservers for the parent domain.
> >>
> >> Glue Address Records are all A or AAAA records pertaining to the child
> >> domain that are delivered by the nameservers for the parent domain
> >
> > That's nice and clear.
> >
> > I use the term "delegation NS records" and reserve "glue records" for the
> > address records.
>
> My reading of 1034 is the same as Tony's. I don't seen in 1034 where the
> delegating NS records would qualify as "glue" at all.
>
>
I use the same terminology also (i.e., "delegation NS records" vs. "glue
records").

But it should be noted that within existing RFCs the terminology differs:

RFC 1034 4.2.1:

    ..."glue" RRs which are not
    part of the authoritative data, and are address RRs for the servers.

RFC 1034 4.2.2:

   ...delegation NS RRs and glue RRs

but:

RFC 2181 5.4.1:

   "Glue" above includes any record in a zone file that is not properly
   part of that zone, including nameserver records of delegated sub-
   zones (NS records), address records that accompany those NS records
   (A, AAAA, etc), and any other stray data that might appear.


It's unclear whether "'glue' above" means "glue, for the purposes of this
document" or "glue, which we are restating the definition of", but it
sounds to me like the latter.  In any case, the definition differs from
that previously stated (and my own understanding).

Casey

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