Hi Andrew, Heiner,

the device is a really small notebook. So detaching mains still leaves
the battery which is delicately built in. So can't currently remove
power completely.

Anyway can I deliver more debugging data to you guys which might add
support for the r8169 for this device?

Regards,
Karsten

On 01/07/2019 15:35, Andrew Lunn wrote:

quoted

When the vendor driver assigns a random MAC address, it writes it to the
chip. The related registers may be persistent (can't say exactly due to
missing documentation).

If the device supports WOL, it could be it is powered using the
standby supply, not the main supply. Try pulling the plug from the
wall to really remove all power.

     Andrew