Hello
I have a problem in my mesh setup which is quite similiar to Bug#216 of the bug tracker. I'm using batman-adv 2014.4.0 in a BLA setup consisting of 3 Mesh Nodes (A, B, C) connected to the same backone network via a common switch and a mesh node D connected to an end device E. I ping that single mesh node D and the connected end device E from a PC which is connected to the same switch as the three Nodes A to C. BLA is compiled and enabled.
From time to time I see looping unicast packets in my backbone network. This unicast looping starts directly after one of the nodes A to C claimed the mac address of my PC. The looping telegram is then the ping request sent by the PC. I have a wireshark recording made in my backbone via port mirroring of one of the switch ports where a mesh node is connected to which shows this behaviour.
I am not sure if I understood bla correctly but isn't it nonsense that a bla backbone gateway claims MAC addresses from its own backbone (i.e. the one it is directly connected to via its ethernet port)?
A simple change in batadv_bla_rx seems to solve this problem: add an additional check before claiming a new mac address: if this address is already known from the tt local table (via command batadv_is_my_client) don't claim it.
This seems to solve my problem as far as I have tested so far. Any thoughts about that?
Best regards, Andreas
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