IPv6 nf_tables packet duplication support

modulename: nft_dup_ipv6.ko

configname: CONFIG_NFT_DUP_IPV6

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>The IPv6 protocol
└─>IPv6: Netfilter Configuration
└─>IPv6 nf_tables packet duplication support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
This module enables IPv6 packet duplication support for nf_tables.

source code:
net/ipv6/netfilter/nft_dup_ipv6.c