I found the answer to this question:
1. create an XML file with a fake configuration (including a subnet not in use elsewhere):
<network>
<name>fake</name>
<bridge name='virbr1' stp='on' delay='0' />
<ip address='192.168.0.1' netmask='255.255.0.0'></ip>
</network>
2. define the network: virsh net-define /path/to/fake.xml
3. autostart the network: virsh net-autostart fake
4. start the network now: virsh net-start fake
Once done, you can add this block of XML to your VM config with "virsh edit <vm_name>":
<interface type='network'>
<mac address='aa:aa:aa:aa:aa:aa'/>
<source network='fake'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
Note that you should adjust the "slot" and "mac" arguments to avoid conflicts.
Thanks,
Andrew
----- Original Message -----
> From: "Andrew Martin" <amartin@xxxxxxxxxxx>
> To: libvirt-users@xxxxxxxxxx
> Sent: Monday, December 30, 2013 11:25:29 AM
> Subject: Fake Network Interface
>
> Hello,
>
> Is there a supported method for creating a fake network interface in a VM's
> configuration file? I was using the below construct, however it is no longer
> working for me in recent versions of libvirt (libvirt 1.0.2 with qemu-kvm
> 1.4.0). Is there a different, preferred method for creating a fake virtual
> interface on the guest which does not exist on the host?
> <interface type='network'>
> <mac address='aa:aa:aa:aa:aa:aa'/>
> <source network='fake'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
> </interface>
>
> Thanks,
>
> Andrew
>
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> libvirt-users mailing list
> libvirt-users@xxxxxxxxxx
> https://www.redhat.com/mailman/listinfo/libvirt-users
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