So Marco ran a measurement and collected pcap files on his ntp server side I then compared what atlas provided for the given measurement, and what Marco ntp server's have seen In short: 44 atlas probes sent and receive NTP responses from Marco's server, but they don't show up in the Atlas results api. See analysis on : https://github.com/gmmoura/ntp-atlas-pcap/blob/main/debug.ipynb /giovane On 10-07-2025 18:01, Marco Davids (SIDN) via ripe-atlas wrote:
Dear list,
If anyone knows, or is able to figure out, why most (but not all) Atlas probes don’t report results for NTP measurements to ntp0.testdns.nl, I’d appreciate your insights.
Examples:
https://atlas.ripe.net/measurements/116922622/
https://atlas.ripe.net/measurements/116946257/
https://atlas.ripe.net/measurements/116830921/
Ping works:
https://atlas.ripe.net/measurements/116921717/
Thanks in advance.
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