CONFIG_NETFILTER_FAMILY_BRIDGE (not configurable)

configname: CONFIG_NETFILTER_FAMILY_BRIDGE

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>NETFILTER_FAMILY_BRIDGE
In linux kernel since version 4.1 (release Date: 2015-06-21)