It's not a problem at all and causes virt-manager to break down. Please consider including: http://people.freedesktop.org/~lkundrak/libvirt/0001-interface-don-t-error-out-if-a-bond-has-no-interface.patch Submitted upstream: https://www.redhat.com/archives/libvir-list/2015-May/msg01046.html
Setting to POST since there's a patch, please let me know when it's applied and I'll pull it into the -maint branch
*applied to libvirt.git
Pushed to libvirt maint now
libvirt-1.2.13.1-2.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/libvirt-1.2.13.1-2.fc22
Package libvirt-1.2.13.1-2.fc22: * should fix your issue, * was pushed to the Fedora 22 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing libvirt-1.2.13.1-2.fc22' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-9593/libvirt-1.2.13.1-2.fc22 then log in and leave karma (feedback).
libvirt-1.2.13.1-2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.