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Multicast Network Help Please

Offline jdc0730

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Multicast Network Help Please
« on: August 23, 2007, 03:35:17 PM »
I am running TwonkyMedia on my SME server and recently got installed to HR20-700 receivers from DirecTV which will connect to Viiv devices.  In order to get the HR20's to see Twonky, I did the following:

route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0

which according to the manpage: "This is an obscure one documented so people know how to do it. This sets all of the class D (multicast) IP routes to go via "eth0". This is the correct normal configuration line with a multicasting kernel."

I did this because it appeared (in the iptables log) that multicast traffic was also going through ppp0.

However, this did not correct the problem.  I had to create a custom template to remove the iptables entries which prevents multicasting (40MulticastDeny) although the script indicates internal traffic should be allowed.  I would have thought the route above would have ensured that all multicast traffic was local and therefore creating the custom template unnecessary. 

Admittedly, I have very little experience with the networking side of Linux.  Can anyone shed some light?  I want to make sure I am doing the right thing.

Jeff