The linux image released for pcDuino3 serial doesn’t have any MAC address there. When we flash the image to pcDuino3, and boot it for the first time, the linux system will generate a random MAC address and save to the file /etc/mac. After that, further power cycles will not change the MAC address any more.
In many cases, users would like to change to MAC address, the quick and dirty way is to remove the file /etc/mac by typing ‘$sudo rm /etc/mac’, and if we power cycle the board, we will get a new MAC address.
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