I am attempting to solve a problem that has began to plague me since kernel version 2.6.11. I have a single DVB-S PCI card. I receive six PIDs via that card for news streaming (I'm a news junky). The problem is that the multicast streams on each of the six PIDs come from the same address - 10.230.17.5. When I configure the dvb0_? devices, I had been using 10.230.17.20-25 up through kernel 2.6.11. All worked fine - I was able to connect to the six multicasts and see all six PIDs. Starting with 2.6.11, though, the routing table had become much tighter, and it would then only stream through the first device I configured for that subnet. I can tcpdump all the devices and see the stream packets - but I cannot "read" or forward on any except the first I configure for that subnet. I initially tried: route add -net 224.0.6.10 netmask 255.255.255.255 dvb0_0 route add -net 224.0.6.11 netmask 255.255.255.255 dvb0_1 route add -net 224.0.6.12 netmask 255.255.255.255 dvb0_2 route add -net 224.0.6.13 netmask 255.255.255.255 dvb0_3 route add -net 224.0.6.14 netmask 255.255.255.255 dvb0_4 route add -net 224.0.6.15 netmask 255.255.255.255 dvb0_5 This did not help - I still could only see the first device configured for the subnet. I configured each device for a completely different subnet - each, and then attempted to route - still failure. I have read, unfortunately, that multicast cannot be routed. Or at least with the traditional methods. So then I bridged all the devices together: brctl addbr br0 brctl stp br0 off brctl addif br0 dvb0_0 brctl addif br0 dvb0_1 brctl addif br0 dvb0_2 brctl addif br0 dvb0_3 brctl addif br0 dvb0_4 brctl addif br0 dvb0_5 ifconfig dvb0_0 0.0.0.0 up ifconfig dvb0_1 0.0.0.0 up ifconfig dvb0_2 0.0.0.0 up ifconfig dvb0_3 0.0.0.0 up ifconfig dvb0_4 0.0.0.0 up ifconfig dvb0_5 0.0.0.0 up ifconfig br0 10.230.17.20 And this worked through kernel version 2.6.11.11. But, I use the skystar2 card, and until 2.6.12.2, it's flaky. Under 2.6.12.2, the new b2c2_flexcop driver seems to work grand - but now bridging no longer works. I can bridge without errors, but now no data flows from any of the PIDs. I corresponded briefly with the kernel bridge maintainer, and from the initial conversation, I used macchanger to change the mac address for each dvb0_? device so that each was unique within my system. Still no go. The final statement from the bridge module maintainer is that the networking device from linuxtv-dvb must be broke. All I want to do is be able to stream all six PIDs and see them (outside of tcpdump). Final notes - multicast is compiled into the kernel, and ifconfig shows MULTICAST on the devices. Any ideas? Stonewall
