Hi, we have a server and a client. Both are connected to two different networks. Betweeen these four networks there is a complex routing structure. Due to an outage we have an outage from the primary interface of the server to all networks of the client; there is still a route with the secondary interface. And then this happens: 1. The server is listening, the client is starting. 2. Client begins to start Init to the reachable (secondary) interface of the server 3. Server answers with Init ACK from his *primary* interface, which of course does not reach the client Why does the server not answer on his secondary interface when there is still a route on this interface to the client but uses the primary interface which has no route? Tested with 4.9 and 4.18.rc1. Best Martin -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html