we do fight about the same problem in our network. With multi-gateway there it seems the general problems how to influence the batman-adv gateway announcement in respect of gateway capabilities. Additionally we encountered the problem that a gateway lost uptream connection(internet) without switching itself from server to client, so nodes with path to that gateway routes their resp.clients to a "black hole". Question is how generally control the batman-adv routing in those cases. Any suggenstions are welcome 3zl i4free-gr