On Wed, 25 Mar 2015, Darcy Kevin (FCA) wrote:
When the client doesn't get the RRset it wants from the QTYPE=* query, it'll follow up with one or more subsequent queries for the type(s) it cares about.
First of all, let me re-iterate that this client is broken and not a valid client implementation of the DNS. The initial reply could include an NSEC(3) record in the additional section which lists which RRTYPE's are present in the zone, so the querier could figure out without a new query if the MX or other type it really wants, exists. But as I said, this is improper use of the ANY query and the DNS protocol. Paul _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
