Packet socket

modulename: af_packet.ko

configname: CONFIG_PACKET

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Packet socket
In linux kernel since version 2.6.12  
The Packet protocol is used by applications which communicate
directly with network devices without an intermediate network
protocol implemented in the kernel, e.g. tcpdump. If you want them
to work, choose Y.

To compile this driver as a module, choose M here: the module will
be called af_packet.

If unsure, say Y.

source code:
depends
CONFIG_NET

is selected by
CONFIG_BATMAN_ADV