[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)
http://www.faqs.org/rfcs/rfc3879.html

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 ...?

Rich.

-- 
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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