Hi, A packet is sent to a peer from a socket that has no any src addr bound to it. Also, the sending node has more than one interfaces and has configures several default routers for each of the interfaces. It has only these default routes set up and no explicit entry for the destination network or host. How will the outgoing interface and the source addr of the packet be set up? Any documents about it? Or as a last resort, some point where I can start from the kernel source (I got until ip6_dst_lookup->ip6_route_output ->fib6_lookup->fib6_lookup1, but I dont know how the rtable is organized (the data structure) so I don't really understand things from here on. Thanks, Gabor - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html