2008/10/21 Artem Makhutov <artem@makhutov.org>
Hi,

On Tue, Oct 21, 2008 at 04:44:20PM +0200, Frank Schmirler wrote:
> On Tue, 21 Oct 2008 14:46:52 +0200, Artem Makhutov wrote
> > The ADB-Boxes use Multicast-TS. I have captured a transmission from
> > my IPTV provider. So you can take a look on it:
> >
> > http://www.makhutov.org/downloads/adb/
>
> The .pcap file is not accessible. Would it contain the IGMP traffic, too?

Ah, sorry, I fixed the permissions.
Yes, you can the the IGMP traffic there.

Packet #4 is the IGMG Join Group packet. After this one the stream
starts. Packet 1,2 and 3 not relevant, they are used for other multicast
stuff.

Packet #23114 is the IGMP Leave, after this packet the ISP stops the
multicast transmission.

So we can safely assume that this is at least IGMPv2 packets. Since IGMPv1 doesn't have a "Leave Group message".

source : http://www.linux.org/docs/ldp/howto/Multicast-HOWTO-7.html