How to save mode1.. mode6 parameters in a plugin

[bramv]

I'm writing a plugin and it need a MAC address to be able to do an lan wakeup.
It is stored in mode2 parameter. You have to look it up and type it in the hardware settings of the plugin.
Finding the MAC on the device is not so easy.

I want to do a lookup with the python module "get_mac_address" and store it automatically in de mode2 parameter.
It will be much more user friendly.

Does anybody can help?