On 2014.06.23. 23:01, Joachim Tingvold wrote:
It seems to me that the Atlas-probe sends quite some amount of ICMPv6-packets to the root DNS-servers (and even Atlas' own boxes), that are being returned with errors. Why does the probe do this, and does it actually rely on these replies?
Besides the technicalities of firewall rules: all probes are automatically involved in measurements towards root DNS servers (ping/trace/DNS) and pieces of the infrastructure (ping/trace). We use this data to establish baselines about the probe's capabilities and to power the maps available on the site. Many probes report problems in one way or another; we are far beyond the point where we can rely on all (or a set of carefully selected) probes to supply useful data. Regards, Robert