[libvirt] [Qemu-devel] Re: Supporting hypervisor specific APIs in libvirt

Gerd Hoffmann kraxel at redhat.com
Wed Mar 24 07:59:13 UTC 2010

On 03/24/10 00:13, Jamie Lokier wrote:
> Gerd Hoffmann wrote:
>>> - networking: man, setting networking is a mess, libvirt just does it
>>>    for you.
>> +1
>> Even when not using libvirt for a reason or another I usually hook my
>> virtual machines into virbr0 (libvirt default network).
> I had the opposite problem.  Needed to use multiple bridges and have
> some VMs behind NAT without a bridge (private IPs), and some using
> separately firewalled bridges (needed to behave like real attached
> hardware with their original MACs, but be firewalled).

No problem in theory.  libvirt should detect existing bridges and allow 
you to attach virtual machines to them.  So you can setup bridges and 
firewalling for them using usual distro tools and use them for virtual 

In practice I've seen this not working correctly in the past, i.e. my 
br0 didn't pop up in the virt-manager nic setup page.


More information about the libvir-list mailing list