On 29.01.2016 11:24, Andrei Perietanu wrote:
> Hi all,
>
> I am using libvirt to manage VM on my system; after creating a VM (default
> no NICs are present in the configuration) you can add any number of
> interfaces to it (as long as they exist on the host).
> To do that, I edit the configuration xlm:
>
> vmXml = self.domain.XMLDesc()
> root = ET.fromstring(vmXml)
> devices = root.find('./devices')
>
> intf = ET.SubElement(devices,'interface')
> intf.set('type', 'bridge')
> src = ""> > src.set('bridge', bIntf)
> model = ET.SubElement(intf,'model')
> model.set('type', 'e1000')
>
> xml = ET.tostring(root)
> self.conn.defineXML(xml)
>
> Now the problem I have is that the MAC addresses are auto-generated and
> because of this there is no way to predict which interface number the newly
> added interface will map to, on the VM. Ideally, the first added interface
> is mapped to eth0/0, the second one eth0/1...etc. Since the mappings
> depend on the MAC addresses I figured that is the part I need to have
> control over.
>
> Any ideas?
>
You can provide mac address too. Only if none was given in the XML
libvirt makes up one.
Michal
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