Hi, I have the same question. From what I can see from inside debian, it seems the WOL doesn't work // isn't present, but there may be a way to activate it in the bios (but do ARM boards have bios?) Any information would be welcome.
I think it is the same problem as tying to get the udoo board to fell asleep ( power saving move ) and use the real time clock to bring it out of sleep. The answer from the udoo team was you can`t put it in ( power saving mode ) (Problem 1 ), But also the Lan chip would need to send a interrupt signal to the cpu ( Problem 2 ) , and come up of power saving mode , a lot of if`s and but`s . Yes and No the bios is Uboot !!!