[ldns-users] More info from drill -T

[Willem Toorop]

Yes, I've noticed this myself before.  I'll have a look.  It would also
be interesting to see the outgoing queries (to see which NS path has
been followed) in some sort of short form; maybe with verbosity set to 4
or so.
-- Willem

op 30-01-14 00:39, Greg Ward schreef:
> Hi again --
> 
> drill -T is working great with the new "follow CNAMEs" feature --
> thanks, Willem!
> 
> But I find myself wanting more info for two distinct reasons.
> 
> 1) "nxdomain" errors are not obvious in trace mode. E.g.
> 
>    $ drill -T this-is-a-bogus-domain.net
>    .       518400  IN      NS      c.root-servers.net.
>    .       518400  IN      NS      h.root-servers.net.
>    [...]
>    net.    172800  IN      NS      j.gtld-servers.net.
>    net.    172800  IN      NS      i.gtld-servers.net.
>    [...]
>    net.    900     IN      SOA     a.gtld-servers.net. nstld.verisign-grs.com. 1391037622 1800 900 604800 86400
> 
>    There's no explicit "NXDOMAIN" indicator, like you get from "drill" without -T.
>    Increasing the verbosity doesn't help:
> 
>    $ drill -T -V5 this-is-a-bogus-domain.net | grep rcode:
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
>    ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 0
> 
> 2) It's hard (impossible?) to tell how lines of output correspond to
>    DNS query/response packets without using -V5, and that gives a
>    flood of uninteresting additional data. (Including reverse lookups
>    of some of the nameservers that we hit along the way!)
> 
> It appears that the ";; " lines that are useful with normal drill (and
> dig) output are, ummm, not so useful in trace mode. Is this a known
> bug? Or am I missing something (like, that's a feature)?
> 
> Thanks --
> 
>        Greg
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