Hello Axel,
few weeks agoe I had sometimes the problem that batmand (experimental) exits silently. Today I found maybe one reason for this. When you have batman running and insert the iptable rule
iptables -I OUTPUT -o eth1 -j DROP
batmand exits. This also happen for additional interfaces controlled by batmand.
Maybe it helps you a little.
Regards, Stephan
b.a.t.m.a.n@lists.open-mesh.org