I used this tutorial to get WOL working: http://www.xpenology.nl/wake-on-lan/
I changed to the older driver r8168 because r8169 doesn't support WOL on the Realtek 8111, this is indeed a driver issue.
ethtool -i eth0
driver: r8168
version: 8.038.00
firmware-version:
bus-info: 0000:03:00.0