[atlas] querying the config

Hi Randy,

In addition, whether it's the configuration or the IP address used by the probe for a query as Hugo suggested, this would only give you the entry point into the resolution path (and sometimes will be a private IP address of a simple forwarder).  But you can query for TXT record for whoami.ds.akahelp.net, which will return you the IP address of the egress resolver.

Misha


> On Jan 27, 2021, at 4:03 PM, Hugo Salgado <hsalgado at nic.cl> wrote:
> 
> Hi Randy. I don't know if you can check the config, but if you launch
> a DNS measurement taking care to define use_probe_resolver:true, then
> in the dst_addr field of the results you will have the IP that it used
> as the resolver.
> 
> Hugo
> 
> On 12:23 27/01, Randy Bush wrote:
>> howdy
>> 
>> so i wanted info about a probe's config, specifically what dns
>> resolver(s) it is using.  i could not figure out how to do this.
>> assuming it was a lack of clueons, i asked a friend with far deeper
>> atlas fu.  they said such queries are not available.  really?
>> 
>> [ yes we have bright ideas on how to discover this indirectly by
>>  mining past data ]
>> 
>> but really?
>> 
>> randy
>>