[libvirt] Network Interface: How to disable virbr0 correctly?

[Cole Robinson]

On 03/07/2011 04:32 PM, Jake Xu wrote:
> Hi all,
> 
> Recently, I have been using libvirt to create virtual machines on ESX
> servers. It has been very well until to the point where I couldn't find any
> way to disable/remove the virbr0 interface properly.
> 
> We use static configuration for VMs on ESX so we do not need to use virbr0
> interface and we do not want libvirt to configure iptables as a result of
> the newly created virbr0 interface.
> 
> I have tried to remove/rename the /etc/libvirt/qemu/networks/autostart.xml
> file, and that prevents virbr0 being installed.
> 

Here is how to properly remove steps virbr0 (the default virtual network):

http://wiki.libvirt.org/page/FAQ#How_can_I_make_libvirt_stop_using_iptables.3F

> However, that also seems to prevent the second interface eth1 being
> configured properly. After libvirt defines a VM, eth0 and eht1 are both
> installed, but only eth0 is configured properly.
> 
> The eth1 does not appear in the /etc/sysconfig/network-script/ifcfg-xxx
> file. It seems to me that the 'autostart.xml' file interrupts the
> configuration of the eth1 interface.
>

Not sure why autostarting a virtual network would also bring up eth1, so
no ideas there.

- Cole