dig +trace to find all the forwarders?

[Josh Kuo]

>
> You need administrative access to see the overides to the normal resolution
> process.
>
>
Just so I understand this completely, by administrative access you mean I
need to be able to log in to each of the resolvers (not administrative
access on my local workstation to do a 'sudo dig example.net a +trace'),
correct?

A follow up question to that... is it even possible to perform such a trace
(revealing all resolvers) with the DNS protocol? Or is this purely a
designed limitation of dig?
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