Right?! Also, nor IP and MAC binding or WoL over WAN should be needed. The router already has all info that it needs in order for WoL to work, and it already supports requests from the internet (through the app) so WoL can be done through LAN normally — the request would come from the app to the router and the router would then send the WoL packet to the local network. This is just like the setups people usually do for this: have a raspberry or whatever cheap device listening on port 80 or whatever and then send the WoL packet internally to the LAN network.