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Re: [Xen-devel] multicast?

from [Ian Pratt]

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To:	David Becker <becker@xxxxxxxxxxx>
Subject:	Re: [Xen-devel] multicast?
From:	Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
Date:	Thu, 11 Mar 2004 23:17:44 +0000
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> 
> I trying to use udpcast in Domain 0 without any luck.
> I built a xenolinux-2.4.25 with CONFIG_IP_MULTICAST=y
> but do not see any multicast packets get in or out.
> 
> Anyone know if multicast ought to work?  Or is this a TODO item?

I'm afraid multicast hasn't been a big priority for us. This is
certainly something to bear in mind for the new IO world....

However, there are a couple of hacks that might work.

If you can find out what mcast IP address is being used, you
could try using xc_dom_control to add that address to the domain.

Alternatively, try building the xeno-1.3vnet.bk repository. This
can be (build time) configured to provide L2 switching rather
than L3 routing. I think mcast might 'just work' in this
environment. 

Ian


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