IPv6 socket lookup support

modulename: nf_socket_ipv6.ko

configname: CONFIG_NF_SOCKET_IPV6

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>The IPv6 protocol
└─>IPv6: Netfilter Configuration
└─>IPv6 socket lookup support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
This option enables the IPv6 socket lookup infrastructure. This
is used by the {ip6,nf}tables socket match.

source code:
net/ipv6/netfilter/nf_socket_ipv6.c