Can we simulate a high broad cast traffic scenario for a station associated to a OpenWrt AP?

I need to test my device(in power save mode) for a scenario where it is receiving lot of broadcast traffic. Since AP buffers all the messages intended for the stations associated to it, Is there any way i can simulate this scenario by using an Open WRT AP to which my device is associated?

It seems like you set up an OpenWrt AP, and connect to it a laptop or RPi or some such thing. Use that connected device to ping a broadcast address or use a multicast ipv6 address ff02::1 and set up the ping interval to be high-ish

ping -i 0.2

ping -i 0.2 ff02::1%eth0

Something like that