Re: [DNSOP] Clarifying referrals (#35)

On 29 November 2017 at 12:17, Andrew Sullivan <ajs@anvilwalrusden.com>
wrote:

> On Wed, Nov 29, 2017 at 01:14:13PM +1100, Mark Andrews wrote:
> > When the CNAME refers to a name that is out of zone and the target zone
> is below
> > a zone that the server serves you will have CNAME (DNAME) + referral.
> >
> > 4.3.2 loops.
>
> This part I got.
>
> >       pass 1 -> 3a  (adds CNAME, AA is set as it matches the question
> section, QNAME is updated).
>
> This is the CNAME response, yes, ok.
>
> >       pass 2 -> 3b  (we have a partial match with a bottom of zone cut
> which adds the referral).
> >
>
> Right, and the authoritative server can't proceed, but the referral is
> necessary.  Good, this is helpful, thanks.  This also means, of
> course, that in such a response the answer section isn't empty.  Is
> this why you call it a "partial referral"?
>

And said referral could be to an arbitrary node in the DNS tree,  i.e.
possibly "upward"?

Or am I missing something?

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