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igmp problem

DISCUSSION [email protected] 2 participants 2 messages Sep 5, 2005

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lore
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lore
#0 lore raw

Hi!

I wrote a few multicast tools, which use these multicast groups:

225.109.99.112
ff02::6d63:7030
224.110.99.112
ff02::6e63:7030

I have a Cisco in the middle, and both boxes are in different VLANs. The Cisco is sending out igmp queries. The kernel never answers, even after subscribing to these multicast groups.

The kernel version is 2.4.26. What could be the problem here?

I found no netfilter rules, and the kernel has multicast support (at least several igmp related sysctls exist).

Felix

#1 lore raw
Quoted 9 lines · On 9/5/05, [email protected] <[email protected]> wrote:

Hi!

I wrote a few multicast tools, which use these multicast groups:

225.109.99.112
ff02::6d63:7030
224.110.99.112
ff02::6e63:7030

Quoted 9 lines

I have a Cisco in the middle, and both boxes are in different VLANs. The Cisco is sending out igmp queries. The kernel never answers, even after subscribing to these multicast groups.

The kernel version is 2.4.26. What could be the problem here?

I found no netfilter rules, and the kernel has multicast support (at least several igmp related sysctls exist).

I'm unfortunately not able to help you with your specific problem, but a few words of advice: you really ought to start by reproducing the problem with a recent kernel - like 2.4.31 or 2.6.13. 2.4.26 is really ancient and noone really cares about it any more.

You should probably also talk to the netdev people (CC'ed).

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Jesper Juhl <[email protected]>
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