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Re: [netcf-devel] [libvirt] [RFC] Reporting host interface status/statistics via netcf/libvirt, and listing active vs. inactive interfaces



On Thu, Jun 18, 2009 at 09:42:40AM -0700, David Lutterkort wrote:
> On Thu, 2009-06-18 at 10:46 +0100, Daniel P. Berrange wrote:
> > On Wed, Jun 17, 2009 at 10:59:20PM +0000, David Lutterkort wrote:
> > > On Wed, 2009-06-17 at 21:32 +0100, Daniel P. Berrange wrote:
> > > > How do you deal with IPv6  currently ?
> > > 
> > > With lots of Aspirin (actually, not at all)
> > > 
> > > > I was thinking of sugesting an attribute
> > > > 
> > > >   <ip type="ipv6" address="2001:23::2" prefix="24"/>
> > > > 
> > > > but I think its possibly better to have a different element name
> > > > 
> > > >   <ip6 address="2001:23::2" prefix="24"/>
> > > > 
> > > > since the former would not work if we ever needed to worry about
> > > > non-IP based addresses.
> > > 
> > > Either works for me, with a slight preference for the first version, on
> > > purely esthetic grounds. And even if we go with that, there's nothing
> > > keeping us from adding an <ipx> element as an alternative to the <ip>
> > > element in the future.
> > 
> > Or a 3rd option is to group addresses by family
> > 
> > 
> >    <addresses family='ipv4'>
> >       <ip address='122.0.0.3' prefix='24'/>
> >       <ip address='24.24.224.4' prefix='24'/>
> >    </addresses>
> >    <addresses family='ipv6'>
> >       <ip address='2001:23::2' prefix='48'/>
> >       <ip address='fe:33:55::33' prefix='64'/>
> >    </addresses>
> >    <adddresses family='ipx'>
> >       <ipx address='2423.4521.66.3.252.'/>
> >    </address>
> 
> I don't see that that buys us anything that we wouldn't have with
> 
>         <ip type='ipv4' address='122.0.0.3' prefix='24'/>
>         <ip type='ipv4' address='24.24.224.4' prefix='24'/>
>         <ip type='ipv6' address='2001:23::2' prefix='48'/>
>         <ip type='ipv6' address='fe:33:55::33' prefix='64'/>
>         <ipx address='2423.4521.66.3.252.'/>

If you do this, then you'll need an explicit element to turn on / off
IPv4 or IPv6 addressing for the inteface as whole. ie to stop the
automatic addition of a link-local address.

By having the container, for each family, the prescense or not of the
container can define whether that address family is enabled for that
inteface. 

Daniel
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