Matt Garman wrote: > Say I have two multicast programs running on the same machine. One > is a sending program, and one is a receiving program. The receiving > program has joined the group to which the sender in sending. > > How does the Linux kernel route these packets? I.e., are the > packets just pushed out to the switch for routing, or is the kernel > smart enough to do some "local delivery" and directly deliver > packets to the listener? Multicast packets are always looped-back by default in Linux. You can turn this behavior off by setting the IP_MULTICAST_LOOP socket option to zero. -Brian -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
