On Sat, 2006-07-22 at 00:57, Phil Meyer wrote: > It appears that only one interface at a time in a Fedora kernel can send > multicast packets. Any documentation as to how to set which interface > to do it eludes me. > > A system with two interfaces (all of our tests featured a wireless > interface as the second interface) will send multicast packets by > default over the primary ethernet interface and never over the wireless > interface. At that point, multicast is handled just like any other udp packet. It will go where you have routed the destination address, or the default route if there is nothing more specific. The sending application should also be able to control it by binding its socket to the interface it wants to use. If you want it to go to multiple interfaces or track listener's IGMP joins you'll need multicast routing software and I'm not sure about the current state of that for Linux. Years ago I used something called smcroute for some static distribution paths but I never got any of the PIM based versions to work. -- Les Mikesell lesmikesell@xxxxxxxxx
