Re: [Xen-users] Xen's interface in promiscuous mode

["Ricardo J. Barberis" <ricardo.barberis@xxxxxxxxxxxx>]

El Lunes 23 Febrero 2009, James Harper escribió:
> > Hello all,
> > Playing with Xen on GNU/Debian Lenny, I just discovered that all my
> > virtual network cards are in promiscuous mode by default.
> > Changing that manually does not seems to change anything (that is,
> > everything still works great).
> >
> > Is there any reason to have virtual network cards in promiscuous mode
>
> ?
>
> > And where can I change this default behaviour ?
>
> The physical network adapters in Dom0 will be in promiscuous mode if
> they are joined to a bridge.
>
> The virtual network adapters in DomU are in promiscuous modem because
> (as of the version of Xen in Lenny) they don't support multicast, and so
> the only way they can receive multicast packets is to be in promiscuous
> mode.
>
> As of 3.3.0 or thereabouts, there is a way for the frontend to tell the
> backend which multicast packets it is interested in, so the behaviour
> may be different there.

Hi James,

Can you elaborate on that, or give a link to read more about it?

TIA and best regards,
-- 
Ricardo J. Barberis 
Senior SysAdmin - I+D 
Dattatec.com :: Soluciones de Web Hosting 

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users