Hi. I've had my attention drawn to some surprising behaviour by certain authoritative name servers. I'm not sure how best to categorize this behaviour, and wonder how some of you might view it.
What's surprising is that an authoritative name server shows both a decremented TTL value (as if it were answering from cache) and the AA flag. I'm not sure which of the following labels is the best fit for this behaviour: - normal and expected (but so far outside my experience), - strange but harmless, - downright wrong. Thanks in advance to whomever is minded to reply. Thanks especially to Mats Dufberg who, diligently investigating what I had mistakenly guessed was a problem in zonemaster, took time to identify, and make me aware of, what was causing occasional trouble reports. Niall
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