ESP-NOW ways to ignore broadcast?

[MStackoverflow]

Hi,

I want to make a private network. I have 2 ESP32 talking to each other with unicast messages but broadcast messagegs can still be received. I'm afraid that someone could flood the network with broadcast messages and jam the ESP32s.

I already filter the messages when I receive them, but the ESP32 still have to process the broadcast messages.

Is there a way to ignore those message? To not even receive/listen them?