CONFIG_NETFILTER_CONNCOUNT (not configurable)

modulename: nf_conncount.ko

configname: CONFIG_NETFILTER_CONNCOUNT

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>NETFILTER_CONNCOUNT
In linux kernel since version 4.2 (release Date: 2015-08-30)  
source code: