Hi, I'm dealing with a strange problem and not sure if it's appearance indicate a problem with a forwarding database or this is the case where a custom patch is misbehaving. Can an entry (net_bridge_fdb_entry) exist in the fdb containing net_bridge_port (dst field) which net_device (dev) is NULL ? This seems very strange. I went through the code and the net_bridge_port is always created in association with a net_device. Are there any circumstances under which the net_device of net_bridge_port may become NULL ? -- Pozdrawiam / Best Regards Tomasz Wisniewski