[atlas] Case sensitive DNS queries from the probe

Thanks Philip,

interesting!

But this is maybe just one side of the coin. For UDMs, where the target(s)
are specified as FQDN, would the various interfaces preserve the case
that would eventually be shipped to the stub resolver, or is this done
"automatically" anyway.

Apologies if I am missing something :-)

Thanks,
Wilfried

On 2015-08-06 14:25, Philip Homburg wrote:
> Hi Wilfried,
> 
> On 2015/08/06 12:44 , Wilfried Woeber wrote:
>> Is there any intelligence available about the percentage (or type) of responders
>> answering with the "correct" camel case?
> 
> I'm running measurement 1666409 which asks for 'WwW.rIpE.nEt.'. In
> addition it sets the DO flag.
> 
> Looking at a download of 'latest', I got the following results:
> Total number of probes: 8267
> Total number of perfect probes: 6780
> Total number of probes with bad Qname: 320
> Total number of probes with FORMERR: 447
> Total number of probes with REFUSED: 74
> Total number of probes with SERVFAIL: 15
> Total number of probes with no answers: 5
> Total number of probes with EDNS0 in Answer: 86
> Total number of probes with no result (timeout): 609
> 
> So 8267 probes are active and 6780 returned the correct results for all
> of their resolvers.
> 
> The other statistics are per resolver. So a single probe may trigger
> more than one error. I'm surprised by the high number of FORMERRs.
> Finding EDNS0 records in the Answer section is also fascinating.
> 
> From other statistics, we find that about 300 probes cannot perform HTTP
> measurements due to DNS lookup failures.
> 
> Philip
> 
>