@Charles
Hi, I'm using eth0 and I don't have any Dongle or shield. I tried to list all modified files modified after I reboot in Read-Write, but I didn't find anything related to the MAC address... :-S

Hi,
Thank you very much for this tutorial. It helped me a lot! I have one issue that I can't solve by myself! I followed this tutorial step by step on my Raspian Jessie Lite system and it works perfectly...but when I put SD Card into another Raspberry Pi (same model RPi B+), it always boot with the IP (through Ethernet) 169.254.xxx.xxx. To fix it, I have to boot (only one time) without ",ro" in /etc/fstab for the disk "/". Then I can put back ",ro"! Do you think that I have some missing symlinks??
Thanks