[atlas] Exact semantics of DNS' use_probe_resolver
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Philip Homburg
philip.homburg at ripe.net
Mon Mar 16 12:11:26 CET 2015
Hi Stephane, On 2015/03/15 22:18 , Stephane Bortzmeyer wrote: > The DNS-specific option use_probe_resolver is mentioned in > <https://atlas.ripe.net/docs/measurement-creation-api/> but with > little indication of the semantics. > > My experience is that some probes (with the default retry=0) return > several responses, with the same "prb_id", but different "from". I > assume it means the probe had several resolvers configured and tried > them all. The semantics of 'use_probe_resolver' is that the probe will send a DNS query to all resolvers listed in /etc/resolv.conf that match the particular IP version of the measurement. I assume that if you want just one result, you can extract that during processing the results. Philip
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