[Libvir] [PATCH] Add a default network

Richard W.M. Jones rjones at redhat.com
Fri Mar 9 15:33:51 UTC 2007

Daniel P. Berrange wrote:
> And the "Stateless autoconfiguration" diagram seems to be exactly what
> I think we'd want. Every guest has a MAC addr so that deals with the
> lower 64-bits of the adress, but how do we choose the upper 64-bits to
> form our 'router advertisment'...  Perhaps that's the bit that we stick
> in the libvirt XML as the configuration parameter

IPv6 has a way that hosts can choose a (semi-)random upper 64 bits as 
well.  Unfortunately as far as I can see it's deprecated :-(

Anyhow, you can read more about it here:

http://www.faqs.org/rfcs/rfc3513.html (section 2.5.6)

You might also consider using link-local addresses (which are not 
deprecated), since the guests are supposed to be directly connected to 
each other.  I'm not sure of the implications of that though ...?


Emerging Technologies, Red Hat  http://et.redhat.com/~rjones/
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  "[Negative numbers] darken the very whole doctrines of the equations
  and make dark of the things which are in their nature excessively
  obvious and simple" (Francis Maseres FRS, mathematician, 1759)
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