Casting About Video multicast routing usually 'Just Works'. Occasionally it doesn't work at all, or the video streams for a few minutes only and then one is left scratching one's head... To find out what is wrong, one has to know how to analyze a playback streaming problem when it happens. Here is something to read on streaming, multicasting and the Internet Group Management Protocol (IGMP): http://www.tldp.org/HOWTO/text/Multicast-HOWTO Multicast Version Sometimes is is necessary to use a specific version of IGMP to get things to work. One can force the IGMP version in the /proc/sys/net/ipv4/conf/eth0/force_igmp_version to 0 (auto), 2 or 3. Multicast Routing The multicast address subnet is the 224.x.y.z address range. For routing to work at all, you need a multicast route, set with a command like this: # route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0 That is if your ethernet port is eth0. Mine is enp0s26u1u1 at the moment - I...
Autonomous planes, trains and cranes...