[B.A.T.M.A.N.] Kernel crashes when using more than one interface in bat0

Hi,

we are using batman-adv in our Freifunk network for meshing over several interfaces. The nodes are connected to vpn-servers via fastd, the vpn-servers are connected via tincd or gretap.

When we put the fastd-interface and the tinc (or gretap)-inteface into bat0, the kernel crashes after some time. With 2013.4, no crashes occured, but since the update to 2014.3 the issue happens sometimes after 5 minutes, sometimes after 3 days. Upgrading to 2015.1 did not solve the problem, it seems the crashes occur more often then.

Unfornately we have no logs now, because after the crashes no ssh -access to the servers are possible.

nc / mm / bl are set disabled and seem to have no effect on this issue.

Regards Bjoern