The onboard network device can not be used in grml 1.0
The following driver worked flawlessly for me:
[1] http://sourceforge.net/projects/atl1/
mini instructions (as user grml):
% tar -xvzf atl1-2.0.7-linux-2.6.20-standalone.tar.gz
% cd atl1-2.0.7-linux-2.6.20
% sudo make install
% sudo modprobe atl1 |