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Re: [libvirt-users] Restarting network on host completely cuts off guests. Why? How to prevent?



On Monday 19 April 2010 15:02:59 Chris Lalancette wrote:
> On 04/17/2010 09:38 PM, Andreas Ntaflos wrote:
> > Hi list,
> > 
> > this probably isn't a completely libvirt-specific question but I'll
> > try anyway. Please ignore if it is too much off-topic.
> > 
> > On an Ubuntu (9.10) virtualisation host, running KVM and libvirt
> > and several guests (Debian, Ubuntu, Windows Server 2003) in a
> > bridged network fashion [1,2] I noticed that performing
> > 
> > /etc/init.d/networking restart
> > 
> > on the host completely cuts off all guests from the network. I have
> > to manually shutdown and restart (virsh shutdown GUEST && virsh
> > start GUEST, a mere reboot doesn't suffice) them to get them onto
> > the network again. Obviously that's not ideal.
> > 
> > Is this the expected behaviour? Can I somehow re-establish guest
> > network connectivity without shutting down the guest first? Is my
> > setup somehow wrong or do I expect too much?
> 
> Unfortunately, that is the expected behavior.  If you do:

Hi, 

thank you for the clarification and confirmation. I'll be keeping it in 
mind. Hopefully libvirt will someday support restarting the network; 
unfortunately there isn't much I can do to help except testing.

Thanks, 

Andreas
-- 
Andreas Ntaflos 

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