What happens when I right-click a machine in the inventory and select Wake on Wan?
First, make sure that you have the red circle in front of the machine to have the option Wake up available to you.
Core server sends a ##LD_WAKE_ON_WAN## Message to an MDR which in turn send the Magic Packet on port 0 to the machine you want to wake up.
The protocol used is WOL.
In the below Wireshark trace
192.168.1.201 -> MDR
You do not need to have a static MDR.