IPset

modulename: em_ipset.ko

configname: CONFIG_NET_EMATCH_IPSET

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>QoS and/or fair queueing
└─>IP set support
└─>IPset
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Say Y here if you want to be able to classify packets based on
ipset membership.

To compile this code as a module, choose M here: the
module will be called em_ipset.

source code: