Already handled.

            if (update_class == zoneclass) {
                        /*
                         * Check for meta-RRs.  The RFC2136 pseudocode says
                         * check for ANY|AXFR|MAILA|MAILB, but the text adds
                         * "or any other QUERY metatype"
                         */
                        if (dns_rdatatype_ismeta(rdata.type)) {
                                FAILC(DNS_R_FORMERR,
                                      "meta-RR in update");
                        }
                        result = dns_zone_checknames(zone, name, &rdata);
                        if (result != ISC_R_SUCCESS)
                                FAIL(DNS_R_REFUSED);


> On 17 Jan 2018, at 10:24 am, Evan Hunt via RT <bind9-confidential@isc.org> wrote:
> 
> I don't think it's necessary to worry about xfrin, but I do think UPDATE is
> a good idea. I pushed a suggested change, but I haven't been able to come up
> with a working test, nsupdate doesn't seem to want to parse a TKEY rdata.
> I'm probably doing something wrong.
> 
> -- 
> Ticket History: https://bugs.isc.org/Ticket/Display.html?id=47009

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka@isc.org