[c-nsp] All multicast punting to CPU on 6500

Gert Doering gert at greenie.muc.de
Mon Dec 17 08:32:07 EST 2012


Hi,

On Mon, Dec 17, 2012 at 01:16:30PM +0000, Phil Mayers wrote:
> I have a suspicion that re-using the IPv4/IPv6 multicast MAC OUI was 
> part of the problem - that is special-cased in a lot of kit,

That's actually the brilliant thing about it :-) - and yes, kit that
does not handle MAC-level multicast properly is broken, though usually 
there is not enough of that to actually notice.

Wait for IPv6 ND flood attacks...  (and then nobody will be able to point
a finger to MS to tell them "hey, all your fault!")

gert
-- 
USENET is *not* the non-clickable part of WWW!
                                                           //www.muc.de/~gert/
Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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