I couldn't reproduce it anymore as well, closing this issue therefore for now.
Thanks for testing, Ulrich.

regards,
-mika-

Tried to reproduce it with Virtualbox (installed 2009.10-rc1 on usbstick and
created raw image for usb stick) and internal network.

I do not get any message from dhcp except "dhcp: Wrote 0 leases to a file"

Any other hints to reproduce it?

I noticed a very interesting behaviour when using grml-terminalserver with
netcardconfig:

* boot grml from USB pen (so it's NOT an ISO CD boot)
* no network configuration available (no DHCP and no manual configuration done)
* execute grml-terminalserver
* use *all* defaults

Result: DHCP server can't be started because "no suitable interface found" (from
my memory, so not necessarly the right wording).

When using ip 192.168.0.1 and for gateway and nameserver use 192.168.0.254
instead of the default (192.168.0.1) it works. When using range starting from
x.x.x.100 for PXE clients it helps as well. I'm not yet sure whether this is a
bug in netcardconfig or in grml-terminalserver. We've to investigate on this
issue before releasing.

regards,
-mika-