is there a mac learning bcm4709 switch? how to disable it?

[oxygeny]

I am trying to mirror all traffic from wifi device to a switch port, I used libpcap to capture packets, and then inject to vlan7(vlan 7 ports '4 5t'), but no packets I can capture on the switch port, ifconfig I changed the packet's dst mac address, I can capture the packets。So, I think there is a mac learning on the switch, but I can't find the way to disable it!

I am using R7000 running XVortex 380.64