The client ARP cache flushing by router?

I wonder if it is possible to set ARP cache timeout for the clients or to trigger the client ARP cache flushing by router (some crafty broadcast or so) or is it solely for the client itself to decide when it will expire?

If the client side ARP cache is uncontrollable by the router then isn’t one external way for the wifi clients to cause that kind of behavoiur by forcing a unregistration of all clients? How to make that?

/interface wireless registration-table remove [find]