Hi,
it seems not to be a crash. The batman client destroys the gate0 interface after too many tries or is the daemon really dead ? The problem Antonio mentions has been fixed with rev799.
I dont know how this gateway-tunnels really works, but i think this pseudo-NAT on gate0 not really works or send wrong source-IP or what else...
I saw this problem from time to time but it comes and goes. Can you reproduce that everytime ? If so could you provide a step by step explanation to reproduce it ? So far I saw this kind of behaviour with alias interfaces only.
Regards, Marek