[fedora-virt] Network issue between host server and libvirt client

[Cole Robinson]

On 01/21/2014 11:29 PM, David Highley wrote:
> I was some what confused as the libvirt client was able to talk on the
> internet but then seemed not to be able to talk to a host on the local
> net. After more investigation it seems it can talk to all hosts except
> the one it is being hosted on. I'm sure it is something simple, but I
> have very little experience with libvirt. Here is the client
> configuration:
> 

>     <interface type='direct'>
>       <mac address='52:54:00:1b:4b:94'/>
>       <source dev='p57p1' mode='bridge'/>
>       <target dev='macvtap0'/>
>       <model type='rtl8139'/>
>       <alias name='net0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
>     </interface>

What you describe is a side effect of type='direct'/macvtap, you need a
special type of host switch for the VM to talk to the host AIUI.

http://virt.kernelnewbies.org/MacVTap

Also, that nic should probably be using model type='virtio'

- Cole