[linux-dvb] Re: Help with dvbnet and mrouted

[Matt Jarvis <matt@rolec.ltd.uk>]

If you just want the multicast traffic to appear on the eth0 interface, 
you can bridge between the dvb interface and the eth0 interface, and 
then you don't need mrouted.

This is extremely insecure though since you are allowing all the traffic 
from the dvb interface directly into the eth0 network, and should only 
really be used in a trusted environment. We receive push and stream 
traffic on our own satellite frequency, so it works fine for us.

Luca Abeni wrote:
> Hi all, 
> sorry for the possibly offtopic question, but I have some problems
> routing multicast traffic coming from DVB interfaces and I hope someone
> can help me. 
> I am receiving IP traffic on a DVB card on two different PIDs. I set up
> the interfaces with
> dvbtune -f 112620000 -s 275000 -p H
> (dvb-core has been loaded with dvb_shutdown_timeout=0)
> dvbnet -p 2001
> dvbnet -p 2401
> ifconfig dvb0_0 192.168.39.5
> ifconfig dvb0_1 192.168.40.5
>
> (if I understand correctly, I cannot receive more than 1 PID on the same
> dvb0_x interface... Right?). 
> I succesfully receive multicast traffic on both dvb0_0 and dvb0_1, but
> now I want to route it on eth0, and I am having problems in configuring
> mrouted. 
> Here is the mrouted.conf that I use: 
> pruning off
> phyint dvb0_0 altnet 128.0.0.0/1 altnet 125.0.0.0/1
> phyint dvb0_1 altnet 128.0.0.0/1 altnet 125.0.0.0/1
> phyint eth0
>
> If I remove 
> phyint dvb0_0 altnet 128.0.0.0/1 altnet 125.0.0.0/1
> the traffic from dvb0_1 is routed, but if I add such a line (to route
> the traffic from dvb0_0) mrouted stops routing traffic frmo dvb0_1. Can
> anyone suggest how to fix my mrouted.conf? 
> 			Thanks,
> 				Luca