Re: [libvirt] [PATCH 2/2] add MAC address based port filtering to qemu
On Wed, 2009-11-18 at 17:10 +0100, Gerhard Stenzel wrote:
On Wed, 2009-11-04 at 12:55 +0000, Daniel P. Berrange wrote:
...
>
> Mark pointed out to me offlist, that this filtering is a little too
> restrictive because it also blocks multicast + broadcast packets. We
> can fix that easily enough with an extra patch though, and a single
> catch-all rule for multi/broad-cast packets.
>
> Daniel
Hi,
I have revisited this subject and was trying to find a scenario, where
multi/broad-cast packets would be affected by this patch and failed so
far.
Since only the source mac address of a guest is filtered, I don't see
how a multicast or broadcast destination mac address could be a problem.
What am I missing?
Ah, that makes sense, thanks.
I hadn't looked closely enough to notice that you're only doing source
mac address filtering.
Cheers,
Mark.