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[atlas] Many timeout-failures for DNS over TCP
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Philip Homburg
philip.homburg at ripe.net
Thu May 11 10:46:52 CEST 2017
On 2017/05/09 10:03 , Davey Song(宋林健) wrote: > I setup measurements for DNS queries over both TCP and UDP. I found the > timeout and failures of TCP is far more than UDP. > DNS over TCP: https://atlas.ripe.net/measurements/8552847/#!probes Hi, Unfortunately, due to a bug, DNS over TCP measurements do not work in firmware 4760. I went over the results of this measurement. And the in most cases the probe was indeed still running 4760. Over time, probes upgrade 4770 and this issue will be fixed. There are a few probes that have a timeout but are running 4770. I created a TCP traceroute measurement using the same probes of measurement 8552847. https://atlas.ripe.net/measurements/8552847/#!probes In those remaining cases, the traceroute fails to complete. So for those probes there a network related issue. Philip
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