Missing support for PACKET_RECV_OUTPUT

Hi,

I wonder why AF_PACKET does not support PACKET_RECV_OUTPUT socket option. I would find this useful when using AF_SOCKET to capture traffic on all interfaces, but only for a specific ETH_P_x specified in the socket call. Right now I have to manually enable promiscuous mode for every ifindex separately.

Is there any specific reason why this socket option has not been implemented? It is listed in linux/if_packet.h after all. Or is this just one of these things where nobody ended up implementing it?

Regards

Marcel