On Tuesday, October 27, 2015 09:16:26 AM Stephane Bortzmeyer wrote: > On Mon, Oct 26, 2015 at 09:36:10AM -0400, > Bob Harold <rharo...@umich.edu> wrote > > a message of 80 lines which said: > > vixie-dnsext-resimprove addresses the case where a single name > > 'b.example' and everything below it do not exist, found by a query > > for 'b.example'. > > Or a query for something.b.example, which received a NXDOMAIN reply, > together with a SOA of example, no?
no. it's a nice idea, but not every label sits on a zone boundary. so if the qname is for a.b.example and the query was sent to the authority for example and an nxdomain comes back with an soa for example, you still don't know whether b.example exists. nxdomain is about the qname, or the name at the end of a cname chain reached through the qname. -- P Vixie _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
