Hi, Apropos of the discussion about arbitrary QTYPE in DNS measurement, I would like to make a request for another small improvement. It would be nice if a probe had the ability to send a DNS query with AD bit set. Such query would be useful in some cases (for instance when using "Use the Probe's Resolver(s)" feature) and would reduce data volume. According to RFC6840 section 5.7: 5.7. Setting the AD Bit on Queries The semantics of the Authentic Data (AD) bit in the query were previously undefined. Section 4.6 of [RFC4035] instructed resolvers to always clear the AD bit when composing queries. This document defines setting the AD bit in a query as a signal indicating that the requester understands and is interested in the value of the AD bit in the response. This allows a requester to indicate that it understands the AD bit without also requesting DNSSEC data via the DO bit. Many greetings, Maciej Andziński, NASK