Bridge Loop Avoidance

configname: CONFIG_BATMAN_ADV_BLA

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Bridge Loop Avoidance
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This option enables BLA (Bridge Loop Avoidance), a mechanism
to avoid Ethernet frames looping when mesh nodes are connected
to both the same LAN and the same mesh. If you will never use
more than one mesh node in the same LAN, you can safely remove
this feature and save some space.