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multicast not coming through on all eth devices
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zzaappp
Apprentice
Apprentice


Joined: 06 Jun 2003
Posts: 176

PostPosted: Tue Dec 20, 2005 3:17 pm    Post subject: multicast not coming through on all eth devices Reply with quote

I did a fresh install on a new machine using Gentoo 2005.1 on a box using INTEL PRO NIC cards. A tcpdump shows streams of multicast data on all 3 devices, but only 2 of the 3 devices is allowing the multicast data to come through to userland applications.

I have tried a number of things - swapping cables, moving the cards around, changing out all the INTEL cards for Syskonnect. But the problem persists: I can get multicast data from only 2 of the 3 devices at any one time.

My old installation used a gentoo 2004 release; 2005.1 had big changes in /etc/conf.d/net.

Could there be a problem with the new network configuration? Garsh sakes, I just don't see how. How can promiscuous mode show the data, but userland only be able to get at multicast data on 2 of 3 devices?

I'm out of ideas. I have multicast turned on in the kernel. Is there something I need to do on a per-device basis to get multicast through to userland?

Suggestions?


-z
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codergeek42
Bodhisattva
Bodhisattva


Joined: 05 Apr 2004
Posts: 5142
Location: Anaheim, CA (USA)

PostPosted: Tue Dec 20, 2005 5:30 pm    Post subject: Reply with quote

Moved from Kernel & Hardware to Duplicate Threads in favor of Where's the multicast data?

Please don't cross-post. Thanks.
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