kvm -net only passing broadcast, multicast, and guest destination traffic

Posted by user52874 on Server Fault See other posts from Server Fault or by user52874
Published on 2012-10-18T22:56:00Z Indexed on 2012/10/18 23:03 UTC
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kvm-virtualization

Figured this out just last week, but I can't find it now. Even printed it out. Can't find that either. Frustrating...so...help!

Configured a 'monitoring' nic on a kvm guest (running 'Security Onion, if it matters). I read (somewhere) that the default nic configuration for a kvm guest is to only pass broadcast traffic, multicast traffic, and traffic with the guest's mac as a destination. There is an option to override this behaviour, and pass all traffic. It's something like --mac-filtering=no, or --mac-restriction=no, or something like that. Worked beautifully.

Does this look at all familiar to anyone who can clue me in to the exact option syntax?

thx.

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