Hi Martijn,
I solved the issue. It was my linksys switch where a link aggregation setting came back after rebooting the switch. I had a bond network with link aggregation set on my nas. With that setting wol did not work, after removing the bond setting I also removed the link aggregation setting on the switch but for some reason it won’t stick after rebooting the switch.
I have put the network cable in another port on the switch and wol is working again.
