Netfilter nf_tables netdev packet forwarding support

modulename: nft_fwd_netdev.ko

configname: CONFIG_NFT_FWD_NETDEV

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>Netfilter nf_tables netdev packet forwarding support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option enables packet forwarding for the "netdev" family.

source code: