On 29 November 2017 at 12:17, Andrew Sullivan <a...@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? > > DNSOP@ietf.org > https://www.ietf.org/mailman/listinfo/dnsop >
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