Calls POST /api/wol/wol/set with no uuid in the payload, which makes the os-wol plugin's WolController::setAction validate and wake immediately without persisting a host to config.xml. Requires the os-wol plugin installed and the target interface to have a static IPv4 (OPNsense derives the broadcast address from the interface's own IP/subnet). Endpoint/payload verified against the plugin's source (opnsense/plugins net/wol), not guessed.