Fix Wake-on-LAN: Implement custom WOL with OS-specific broadcast support

internal/wol/enable_broadcast_unix.go

@@ -0,0 +1,20 @@
+//go:build !windows
+
+package wol
+
+import (
+	"net"
+	"syscall"
+)
+
+func enableBroadcast(conn *net.UDPConn, debug bool) error {
+	raw, err := conn.SyscallConn()
+	if err != nil {
+		return err
+	}
+	var setErr error
+	raw.Control(func(fd uintptr) {
+		setErr = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1)
+	})
+	return setErr
+}