Hi again,
it is still not running :-( but I was able to specify the problem in more detail. First a short summary of what the problem is: I got one client connected to a gateway over batman-mesh. Tunnel (gate0) is established an has assigned correct IP-Adresses. Problem: I am able to ping the gateways WAN-Interface, but I am not able to ping the Standard-Gateway of the WAN. The ping to the WAN-Gateway is not leaving the WAN-Interface of the gateway (I sniffed that with Wireshark).
Strange: When I'm setting up the Network without Batman (setting a fixed gateway on the client) I can ping the Gateway in the WAN. As soon as I start the batmand with -g on the Mesh-Gateway the ping stops. Besides, the ping does not end up in an error-message it just doesn't answer.
In my last test I "replaced" the WAN (which was actually our company-LAN) with another SoHO-Router. So the WAN is now represented by this Router. I did this to aviod complications with already assigned networks.
Still a routing problem, but any kind of help would be nice. Thanks!
Tobi