Hi folks,

I setup measurements for DNS queries over both TCP and UDP. I found the timeout and failures of TCP is far more than UDP.              

For example :

DNS over TCP: https://atlas.ripe.net/measurements/8552847/#!probes

DNS over UDP: https://atlas.ripe.net/measurements/8552846/#!probes

Is it normal ? I mean is there any special timeout routine/parameters of atlas probes from normal resolver?

Best regards,

Davey