Bug 40782 - Bridge module drops multicast frames (in Xen only?)
Summary: Bridge module drops multicast frames (in Xen only?)
Status: RESOLVED INVALID
Alias: None
Product: Networking
Classification: Unclassified
Component: Other (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: Arnaldo Carvalho de Melo
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-08-10 00:48 UTC by Dmitry Khromov
Modified: 2011-08-10 12:38 UTC (History)
0 users

See Also:
Kernel Version: 3.0.1
Subsystem:
Regression: No
Bisected commit-id:

Attachments
Output illustrating the issue (4.30 KB, text/plain)
2011-08-10 00:48 UTC, Dmitry Khromov 		Details
Environment (dom0) (64.82 KB, text/plain)
2011-08-10 11:03 UTC, Dmitry Khromov 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Dmitry Khromov 2011-08-10 00:48:40 UTC 
Created attachment 68262 [details]
Output illustrating the issue

Trying to send multicast frames designated to networks other than 224.0.0.0/24 will result in frames being dropped on the bridge. Tested with bridge created in Xen 4.1.1 Dom0. Output illustrating the issue attached.
Comment 1 Dmitry Khromov 2011-08-10 11:03:29 UTC 
Created attachment 68312 [details]
Environment (dom0)
Comment 2 Dmitry Khromov 2011-08-10 12:38:22 UTC 
Buggy equipment malformed IGMP traffic on it's way to eth1 so the bridge module was not aware of the other multicast groups members, that's why the traffic wasn't forwarded.
That was hard to investigate (everything worked just fine on the same switch's port before we changed the server), sorry for any inconvenience.
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