I think I found the reason why dig +trace always failed with a timeout.
From the announcement of Bind 9.8.1 from earlier today:
* If the server has an IPv6 address but does not have IPv6
connectivity to the internet, dig +trace could fail attempting to
use IPv6 addresses. [RT #23297]
So I only have to update to the new version of named and dig +trace will work.
:-)
-------- Original-Nachricht --------
> Datum: Wed, 31 Aug 2011 17:36:46 +0200
> Von: "Tom Schmitt" <tomschm...@gmx.de>
> An: bind-users@lists.isc.org
> Betreff: Re: RE: what does dig +trace do?
>
> > >> What strikes me as odd is that the first query does return 4
> (internal)
> > >> root servers, but no glue records ?
> > >
> > >I have no idea why this is this way.
> >
> > Because +trace only displays the answer section of the responses by
> > default.
> > Try "dig +trace +additional".
>
> Hi Chris,
>
> you are right, thank you. With this I see the glue records:
>
> ; <<>> DiG 9.8.0-P4 <<>> +trace example.com
> ;; global options: +cmd
> . 10800 IN NS root1.
> . 10800 IN NS root2.
> . 10800 IN NS root3.
> . 10800 IN NS root4.
> root1. 10800 IN A 10.111.111.111
> root2. 10800 IN A 10.111.112.112
> root3. 10800 IN A 10.111.113.113
> root4. 10800 IN A 10.111.114.114
> ;; Received 159 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms
>
> ;; connection timed out; no servers could be reached
>
>
> The main problem is still the same though. The trace option fails with a
> timeout. Even thought I'm operating on the shell of one of the root-servers
> itself (so there is not much network in between to cause trouble).
>
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