In the energy settings of Kodi 17 is the option that known servers could be waked up. When I activate it I get the error message, that the MAC address from the (correct named!) server could not be found out. (sorry it was translation from the german gui).
I tested it directly. I recieved the MAC with ifconfig -a on the machine itself. From another machine I send a "wakeonlan MAC" and it worked.
"etherwake MAC" didn't work! I can not see the diff between this two tools.
Not sure how Kodi tries do find out the MAC of the server.