On Sun, 30 May 2021 at 14:49, Lukas Tribus <lukas@ltri.eu> wrote:
Hello,
On Sun, 30 May 2021 at 14:39, Stephane Bortzmeyer <bortzmeyer@nic.fr> wrote:
To reproduce, just try to resolve zoom.us or google.us against 8.8.8.8 or 1.1.1.1 on your probe.
It works and I don't see one SERVFAIL:
% blaeu-resolve --requested 100 --area North-Central --nameserver 8.8.8.8 --type A google.us ... Test #30484765 done at 2021-05-30T12:34:54Z
That's a major difference to what I'm seeing, and I don't get why the difference is so huge.
Just now:1000 probes, area North-Central, A record google.us against 8.8.8.8:
Above 90% of ther answers are SERVFAIL (the rest probably is not in yet, or timeout). https://atlas.ripe.net/measurements/30484987/#probes
Only 12 (twelve) probes returned NOERROR.
Here's the cause: By default, the Atlas UI for measurements has the "RECURSION DESIRED" flag disabled. It is buried under advanced options, as it would be some optional flag. blaeu-resolve set this by default. Thanks, Lukas