AC68U LAN wake-on-lan for Plex server

I have an Intel NUC8 as my Plex server, and I'm trying to get it to automatically WOL on network requests to its IP on the Plex port (32400 IIRC). I had expected it would work like my NAS and be able to wake on any request but found I need to do some customization.

I have an ASUS RT-AC68U running the latest ASUS firmware and have been able to wake the server via the router's Wake-On-Lan page, so the server is configured correctly to wake on WOL packets.

I've used Merlin firmware in the...

AC68U LAN wake-on-lan for Plex server