WOL problem on NVX

Slasky wrote:
And that's what I've figured why it needs to send ARP requests, for the sole reason to find out where the MAC-address is located in the network.

Almost. It certainly needs ARP to create a MAC/IP address binding for static addresses. DHCP is enough to create that binding for router-assigned addresses.

As you say, ARP is also a convenient way to find out where the MAC address is "located" - learning which physical interface in the router is used to reach to reach it.

Slasky wrote:
Still it should keep the ARP table input until I reboot or power down the router imo (unless I've misunderstood the functions and inner workings of an ARP table)

Yes. Though sometimes the physical interface changes. For instance if you have multiple WiFi access points, and you switch from one to another - then the router sees your traffic coming in a different LAN port.

Does your WoL problem only happen when you remove the power cable from the computer for a while? If so, the issue may be in the bios of the computer (not responding to the WoL request). If the computer is in a sleep state, then the bios actions are different than power off (requiring starting a boot sequence from the power off state).