Need Help to understand network interface in Promiscuous mode.

A Network interface in promiscuous mode accepts and process all the packets, even if the packets were not destined for the host. So what I am doing is... I have created 3 LXC containers in my computer and their IP's are

 10.248.150.60 ( c1 ) 10.248.150.235 ( c2 ) 10.248.150.197 ( c3 ) 

I have put c3 in promiscuous mode.

When I ping c1 from c2 and run tcpdump on c3, I should be able to see the echo requests coming from c2 on c3 and echo replies going from c3 to c2 in tcpdump output. However I am not seeing any packets coming to c3.

Am I misunderstanding the meaning of promisuous mode or is it some system fault because of which I am not seeing any output on c3??