Wake up a sleeping or powered off M1 Mac Mini with a Wake-On-LAN packet?

I have an M1 Mac Mini running Sonoma 14.3. I would like to be able to put it to sleep or shut it down when not in use to conserve energy. But, I also want to be able to remotely power it up so I can access it when I need to using VNC, SMB, or SSH. I have typically done this by sending WOL (WakeOnLan) magic packets from my home router which is pfSense. This has always worked fine—until this Mini. I've checked the Energy Saver prefs, made sure womp=1 in pmset -g and even tried mucking around with nvram / darkwake settings. I'm sure the Ethernet MAC address is correct. Nothing has worked. WOL to an Intel NUC sitting on the same network works as expected. What happens when I send the WOL packet is one of: - absolutely nothing: no lights, no activity, screen remains dark. - power LED comes on, Mac becomes "pingable", screen stays dark, but after 5-10 seconds, the Mac goes back to sleep. At no point during this sequence am I able to connect via VNC. Is this a hardware bug with the M1's? Anyone know of a solution?