busybox dnsd to support domainname search

Ming-Ching Tiew mctiew at yahoo.com
Sat Apr 11 13:57:37 UTC 2009




--- On Sat, 4/11/09, walter harms <wharms at bfs.de> wrote:

> From: walter harms <wharms at bfs.de>
> Subject: Re: busybox dnsd to support domainname search
> To: "Ming-Ching Tiew" <mctiew at yahoo.com>
> Cc: busybox at busybox.net
> Date: Saturday, April 11, 2009, 12:47 PM
> 
> 
> Ming-Ching Tiew schrieb:
> > 
> > I have tested this with busybox 1.13.3 :-
> > 
> > the busybox dnsd does not support a fqdn search
> because of two reasons :-
> > 
> > 1. The MAX_HOST_LEN is too short.
> > 
> >     A typical fqdn is much longer
> than the default in the C file.
> 
> 
> you may like to choose  MAXHOSTNAMELEN
> but again that is the "hostname" not the FQDN.
> 
>

The 'dnsd' is a simple and static dns server, everything is obtained
from the file 'dnsd.conf'. However it's current form, if you enter
a line '1.2.3.4 www.google.com' into 'dnsd.conf', and you make a
query from a client, for example,

       $ dig www.google.com

'dnsd' will never able to match it even though the file contains an
entry for www.google.com.

I thought by doing some small fixes, then 'dnsd' could be used to fool the
client that it's talking to a full fledged dns server. Isn't it the
purpose of 'dnsd' ?

regards.


      


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