Hi Niall, On 07-Jan-2020 13:20 CET, <niall.orei...@ucd.ie> wrote:
> 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. could it be dnsdist in front of an Authoritative, with the `dontAge` setting of newPacketCache set to false? > 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 -- Nico _______________________________________________ dns-operations mailing list dns-operations@lists.dns-oarc.net https://lists.dns-oarc.net/mailman/listinfo/dns-operations
