Re: [atlas] Case sensitive DNS queries from the probe

Hi Wilfried, Quick mental counting suggests that there are 3 different options: 1) if resolve-on-probe is not set, the target is resolved by the Atlas backend and the probe only gets the IP address. The (glibc) stub resolver on CentOS does not do any case mangling. 2) if resolve-on-probe is set th

Re: [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 so

Re: [atlas] Case sensitive DNS queries from the probe

Emile > On 7 Aug 2015, at 05:26, Emile Aben wrote: > > How about having a single overview page per probe with various things > that could be wrong with the probe? That would be truly excellent Emile! :-) f

Re: [atlas] Case sensitive DNS queries from the probe

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Fearghas, Colin, others, On 06/08/15 17:05, Philip Homburg wrote: > On 2015/08/06 16:56 , Colin Johnston wrote: >> would be great to have this info, happy to help to debug problems >> with dns connectivity if my isp is affected as well on mass >> scal

Re: [atlas] Case sensitive DNS queries from the probe

On 2015/08/06 16:56 , Colin Johnston wrote: > would be great to have this info, happy to help to debug problems with dns > connectivity if my isp is affected as well on mass scale, i hope not :) You should be able to get a list of probes that mangle case in DNS from the probe archive API. https:/

Re: [atlas] Case sensitive DNS queries from the probe

would be great to have this info, happy to help to debug problems with dns connectivity if my isp is affected as well on mass scale, i hope not :) Colin > On 6 Aug 2015, at 14:12, Fearghas Mckay wrote: > > >> On 6 Aug 2015, at 13:57, Philip Homburg wrote: >> >> For the DNS issue, we have a

Re: [atlas] Case sensitive DNS queries from the probe

> On 6 Aug 2015, at 13:57, Philip Homburg wrote: > > For the DNS issue, we have a system tag 'Resolver Mangles Case'. But > that depends on the probe host looking at the probe page. > and knowing that things like that might be published there :-) > It is not clear when and how often we should

Re: [atlas] Case sensitive DNS queries from the probe

On 2015/08/06 14:43 , Fearghas Mckay wrote: > Is there a process to tell probe owners that they have issues like that ? For the DNS issue, we have a system tag 'Resolver Mangles Case'. But that depends on the probe host looking at the probe page. It is not clear when and how often we should mail

Re: [atlas] Case sensitive DNS queries from the probe

Phillip > On 6 Aug 2015, at 13:25, Philip Homburg wrote: > > From other statistics, we find that about 300 probes cannot perform HTTP > measurements due to DNS lookup failures. Is there a process to tell probe owners that they have issues like that ? f

Re: [atlas] Case sensitive DNS queries from the probe

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

Re: [atlas] Case sensitive DNS queries from the probe

Hi Philip, thanks for the explanation! Is there any intelligence available about the percentage (or type) of responders answering with the "correct" camel case? Thanks, Wilfried On 2015-07-29 15:21, Philip Homburg wrote: > On 2015/07/29 15:13 , Yang Yu wrote: > > Looking through DNS queries l

Re: [atlas] Case sensitive DNS queries from the probe

On 2015/07/29 15:13 , Yang Yu wrote: > Looking through DNS queries log I saw tons of queries from the probe > for case sensitive names. Can someone please enlighten me what the > possible use cases are? > > query: wWw.FacebOOK.COm IN A Many years ago there was a proposal for stub resolvers to p

Re: [atlas] Case sensitive DNS queries from the probe

On Wed, Jul 29, 2015 at 10:13:57PM +0900, Yang Yu wrote a message of 18 lines which said: > Looking through DNS queries log I saw tons of queries from the probe > for case sensitive names. Can someone please enlighten me what the > possible use cases are? Probably a test of

[atlas] Case sensitive DNS queries from the probe

Hello, Looking through DNS queries log I saw tons of queries from the probe for case sensitive names. Can someone please enlighten me what the possible use cases are? query: wWw.FacebOOK.COm IN A query: wWW.Wikia.COM IN A query: WwW.wIkIA.cOM IN A query: POOl.NTP.ORg query: Www.wikiA.CoM IN A qu