On Mon, May 11, 2020 at 1:48 PM Robert Evans via dns-operations < [email protected]> wrote:
> From: Robert Evans <[email protected]> > On Fri, Apr 17, 2020 at 1:23 PM Robert Evans <[email protected]> wrote: > >> [...] >> >> Not sure the motivation for why the server does that, but I agree it >> should be NOERROR or NXDOMAIN for all RTYPEs that don't exist including >> unknown ones. We're looking into this and will get back to you. >> > > Following up here: I've confirmed this behavior is an oversight and will > be corrected in an upcoming server release. > Hi Bob, I just want to elaborate on one important point from Mark's earlier response. For the query in question (google.com, type 1001), the response should be NOERROR, and not NXDOMAIN (the name google.com exists, so the response cannot be NXDOMAIN, regardless of what query type was issued). Specifically, it should be a "NODATA" response (response code: NOERROR, an empty answer section, and a SOA record in the Authority section). More generally, if the domain name exists (either because it has other RR types associated with it, or if it has none but has descendent nodes that do have RRsets), then the response must be NODATA. Shumon.
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