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Re: [libvirt] setting up dnsmasq options for PXE boot



On Thu, 2009-01-22 at 15:20 +0000, Daniel P. Berrange wrote:
> On Thu, Jan 22, 2009 at 03:12:39PM +0000, Richard W.M. Jones wrote:
> > On Tue, Jan 20, 2009 at 02:05:26PM +0300, Dmitry Guryanov wrote:
> > > But for working PXE boot it should have also something like
> > > --dhcp-boot=pxelinux.0,itchy,192.168.107.1
> > 
> > This isn't supported by libvirt at the moment, but it would great to
> > have a patch which enabled this.  PXE-booting using dnsmasq is very
> > reliable, and there's no particular reason why we shouldn't support
> > it.
> 
> Well the virtual network stuff is local to the host only, and so it
> is even more reliable if you just boot the guest in question from
> the kernel+initrd directly, instead indirectly giving it the kernel+
> initrd via a dodgy PXE server. 
> 
> We have a hammer, but I don't think we should use it in this case.

When you NAT the virtual network to the outside world (like Dmitry
does), there's no reason why the TFTP part of a PXE boot should not
work. 

And if you're on a laptop, connected to a network with a working TFTP
server, I don't see why you should have to screw around with kernel
+initrd.

I always felt it's a mistake to work so hard to hide the actual dnsmasq
config from users - it would be much more extensible if we plonked a
config file into /etc/dnsmasq.d

David



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