On Thu, Dec 16, 2010 at 6:47 PM, Andrew Gasson <agasson@red-elvis.net> wrote:

On 16/12/2010, at 5:10 PM, exarkun@twistedmatrix.com wrote:

> On 03:59 pm, itamar@itamarst.org wrote:
>> On Thu, 2010-12-16 at 12:09 +0200, Pandelis Theodosiou wrote:
>>> I've also tried to use listenMulticast instead of listenUDP but then I
>>> realized this is if I need more than one application to listen/write
>>> to the multicast port and I don't need that.
>>> pandelis
>> You should use listenMulticast regardless if you want to use multicast.
> Is that an error in the udp howto, then?  The second multicast example
> uses listenUDP.

check the ttl of your multicast source , they usually default to TTL=1 so wont pass a router hop, also with nix boxes check once you start listening
you are listening on right interface with netstat -g

> Jean-Paul

Thnx to all for the responses. It was a router configuration.

Now, is there a way I can select which interface to use (eth0 or eth1)?

I tried using

  joinGroup('', 'eth0')

but it raises an error   (DNS Lookup failed...)