On Sun, Aug 14, 2016 at 07:21:28PM +0200, Linus Lüssing wrote:
Second guess (which is probably it :-) ): In general, batman-adv (re)broadcasts a multicast packet three times on an interface. To ensure proper reception even over multiple hops.
PS: As you are compiling batman-adv yourself, you might want to try different values for BATADV_NUM_BCASTS_WIRELESS in main.h to (in)validate this hypothesis.