We believe that your issue has been closed by the upload of
Version 0.8.34 of grml-autoconfig from Michael Prokop <mika@grml.org>.
The explanation is attached below

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Format: 1.8
Date: Sat, 17 Oct 2009 14:58:28 +0200
Source: grml-autoconfig
Binary: grml-autoconfig
Architecture: source all
Version: 0.8.34
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-autoconfig - main bootup process of a grml system
Changes: 
 grml-autoconfig (0.8.34) unstable; urgency=low
 .
   [ Ulrich Dangel ]
   * Integrate patch by Andreas Thienemann <andreas@bawue.net> (thanks!):
     Add a dhcphostname option to grml which will set the hostname of the
     booted system according to the dns information.
     This Patch implements support for the non-netboot cases by adding
     an appropriate script to be called by pump.
 .
   * Reworked and grmlfied patch from Andreas Thienemann:
     Introduced etc/grml/pump-scripts.d, added wrapper script
     /usr/lib/grml-autoconfig/pump-runparts, modified set-hostname to use
     checkbootparam and run it per default (disable via 'nodhcphostname').
 .
   [ Michael Prokop ]
   * Make sure the hostname script is executed only in live mode and
     uses grml-hostname for adjusting /etc/hosts as well.
     [Closes: issue679]
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Marking this bugreport as release-stopper so we don't oversee it before we plan 
to release.

thx && regards,
-mika-

Using this bootoption will lookup the assigned ip address received by dhcp 
and assign the reverse pointer as the local hostname.

This helps keeping systems apart when netbooting/working remotely on them 
via ssh.