AFAIK the wol client is for sending magic packets, not receiving them.
Correct. I use a Wake-on-lan client when my Fedora box isn't accepting ssh, then I can use ssh. I
haven't needed to do anything to enable reception of the magic packets on Fedora, but that may be
a function of the BIOS and network hardware and firmware. Dual boot with Windows may cause
problems as Windows has a low-power mode wake-on-wan mode for wifi.