wake on lan (WOL) not working on TS-853U

[hbunjes]

I am running a TS-853U wit the firmware version 4.3.6.0867

According to the QNAP website this model supports WOL. But when I power down the NAS the LEDs at the ethernet port go dark and the machine doesn't react on WOL packets.
I am using port trunking (link aggreagtion) on ethernet ports 1 and 2 which are connected to the same managed switch

I have several machines configured to use WOL and it works with all of them so I am quite sure I know what I am doing.

Any idea what I can do?

Thanks in advance
Heiner

[hbunjes]

Really nobody?

[dolbyman]

try it without trunking ?

[storageman]

In Qfinder Pro do you see the WOL icon?
https://www.qnap.com/en/how-to/knowledg ... inder-pro/
I doubt trunking has anything to do with it.