On 06/19/2014 02:47 PM, Thomas Stein wrote: > Hello. > > I have a strange error with one of my VMs. If i use dumpxml to save a VM > description the source part of the network part is missing. This prevents > redifining the machine from the dumped xml file: > > This is how it looks before dumpxml: > > <interface type='bridge'> > <mac address='52:54:00:34:a1:56'/> > <source bridge='br406'/> > <model type='virtio'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' > function='0x0'/> > </interface> > > > And afterwards: > > <interface type='bridge'> > <mac address='52:54:00:34:a1:56'/> > <target dev='vnet6'/> > <model type='virtio'/> > <alias name='net0'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' > function='0x0'/> > </interface> > > Someone has an idea whats causing this? Is there a special option maybe? > 1) what is the libvirt version? 2) are you using "virsh dumpxml --inactive"? The source should anyway be there when you do virsh dumpxml with or without --inactive, but the proper way to get the config of a domain that can be fed back into the domain is by using --inactive (otherwise you get the current status of the interface, which may have some differences). (I'm interested to learn the libvirt version because when I look at the virsh dumpxml of an <interface type='bridge'> on my system running current upstream libvirt, I *do* see the <source> element. Given the version you're running, I can possibly take a look at that vintage of source to see if there was a bug in that version)