Re: [DNSOP] Brief addition to terminology-bis draft

Actually, 5.2 suggests that a master  file (not zone) should contain a
single class and single SOA record.  That’s not the same thing as limiting
a zone to a single class AFAICT.

Mike

On Mon, Sep 3, 2018 at 18:49 Mark Andrews <marka@isc.org> wrote:

> RFC 1035 Section 5.2 limits a zone to be single class.
>
> > On 4 Sep 2018, at 1:34 am, Paul Vixie <paul@redbarn.org> wrote:
> >
> >
> >
> > Suzanne Woolf wrote:
> >> Hi all,
> >>
> >> During the IESG review, Adam Roach noticed that
> >> draft-ietf-dnsop-terminology-bis talked about “class" but never defined
> >> it. This seemed to the authors and chairs like a reasonable thing to
> >> fix. It’s also important enough that we want WG review, but not
> >> extensive enough to require a new LC.
> >>
> >> Here's the definition that the authors would like to add to the
> document:
> >>
> >>
> >>    Class:
> >>    A class "identifies a protocol family or instance of a protocol"
> >>    (Quoted from [RFC1034], Section 3.6). "The DNS tags all data with a
> >>    class as well as the type, so that we can allow parallel use of
> >>    different formats for data of type address." (Quoted from [RFC1034],
> >>    Section 2.2). In practice, the class for nearly every query is "IN".
> >>    There are some queries for "CH", but they are usually for the
> >>    purposes of information about the server itself rather than for a
> >>    different type of address.
> >>
> >> Please let us know your opinions yea or nay by Monday, Sept. 10,
> >> midnight UTC.
> >
> > i don't think this def'n serves the need. we need to speak more truth:
> >
> > "The Class tag was weakly defined, such that either a zone can have data
> in multiple classes, or each class can have its own zone cut hierarchy, and
> so neither interpretation can be relied upon by DNS protocol implementers."
> >
> > then go on to "in practice..."
> >
> > --
> > P Vixie
> >
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>
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742              INTERNET: marka@isc.org
>
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