Multicast optimisation

configname: CONFIG_BATMAN_ADV_MCAST

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Multicast optimisation
In linux kernel since version 3.15 (release Date: 2014-06-08)  
This option enables the multicast optimisation which aims to
reduce the air overhead while improving the reliability of
multicast messages.