[U-Boot] Mac address warning

[Eric Nelson]

Hi all,

While testing Troy's usbnet patches, I was reminded of
this mysterious warning issued when the environment has
no mac address stored, but the device provides one:

	printf("\nWarning: %s using MAC address from net device\n",
			dev->name);

Why is this a warning? It's the out-of-the box default
for new boards who haven't saved a mac address to the
persistent environment.

Please advise,


Eric