We believe that your issue has been closed by the upload of
Version 0.2.5 of grml-network from Michael Prokop <mika@grml.org>.
The explanation is attached below

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Mon, 03 Nov 2008 18:23:39 +0100
Source: grml-network
Binary: grml-network
Architecture: source all
Version: 0.2.5
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-network - network related helper scripts
Changes: 
 grml-network (0.2.5) unstable; urgency=low
 .
   * net-functions: getLanDriver() does not return driver for madwifi.
     Thanks for the fix to Ulrich Dangel. [Closes: issue551]
   * Update VCS headers (we use git nowadays).
Checksums-Sha1: 
 018f0bc7a2d1c431bc5a60256fd6bd933cd3568d 887 grml-network_0.2.5.dsc
 44c9eebd60dd5626656e5d4a0923b656eebefa3e 87070 grml-network_0.2.5.tar.gz
 7f2b62cadd97edc638607c5238bcbd8784932a18 91234 grml-network_0.2.5_all.deb
Checksums-Sha256: 
 637292672899ced16e199c8c5c675d33461463bb531f08c018abf1a2af6962bb 887 grml-network_0.2.5.dsc
 7e16cefe0e1656885502be028434805db269e3d3b6b15d5fa9d7ad62324cfb98 87070 grml-network_0.2.5.tar.gz
 9dba450a5233442cb3cdd31290bc641f202bb675df694c74e6ce3eecf379e429 91234 grml-network_0.2.5_all.deb
Files: 
 990300b389423f09c952696005b26dd1 887 grml optional grml-network_0.2.5.dsc
 e429af942f7ec5442855254e687decd9 87070 grml optional grml-network_0.2.5.tar.gz
 2500b9c8d834436eb995be2521934184 91234 grml optional grml-network_0.2.5_all.deb

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Atheros devices do not support to get driver information via ethtool (kernel
version 2.6.23)

root@x20 ~ # ethtool -i wifi0
Cannot get driver information: Operation not supported
71 root@x20 ~ # ethtool -i ath0
Cannot get driver information: Operation not supported

There for grml-ap does not work as expected, as it can not detect that there is
an atheros card and setup and access point.

root@x20 ~ # acp grml-network
grml-network:
  Installed: 0.2.4
  Candidate: 0.2.4
  Version table:
 *** 0.2.4 0
        996 http://deb.grml.org grml-testing/main Packages
        100 /var/lib/dpkg/status

root@x20 ~ # source /etc/grml/net-functions
root@x20 ~ # getLanDriver ath0
root@x20 ~ #

With modified version
root@x20 ~ # vi /etc/grml/net-functions 
root@x20 ~ # source /etc/grml/net-functions
root@x20 ~ # getLanDriver ath0             
ath_pci