I did a clean install of Fedora 23 on my new ‘built from recycled components‘ crash-and-burn test system recently, and all went reasonably well – apart from – apparently – having to re-partition an already-partitioned drive (!)…

After booting for the first time, I found that a ‘bridged’ network link – virtbr0 – was active..    As I did not want/need this, I tried deactivating/deleting it, using the usual network commands (ifdown, ifconfig…down…) only to have it reactivated each time..

After a bit of research, this is one way to get rid of it..

Check to see if it is running:

systemctl status libvirtd.service
● libvirtd.service - Virtualization daemon
................etc....

Kill it (as root):

systemctl disable libvirt-guests.service
systemctl disable libvirtd.service
systemctl stop libvirtd.service

Get rid of all the libvirt stuff:

# rpm -qa |grep libvirt
libvirt-daemon-driver-qemu-1.2.18.2-2.fc23.x86_64
libvirt-client-1.2.18.2-2.fc23.x86_64
libvirt-gobject-0.2.2-1.fc23.x86_64
libvirt-daemon-driver-nodedev-1.2.18.2-2.fc23.x86_64
libvirt-daemon-driver-storage-1.2.18.2-2.fc23.x86_64
libvirt-daemon-kvm-1.2.18.2-2.fc23.x86_64
libvirt-glib-0.2.2-1.fc23.x86_64
libvirt-daemon-1.2.18.2-2.fc23.x86_64
libvirt-gconfig-0.2.2-1.fc23.x86_64
libvirt-daemon-driver-nwfilter-1.2.18.2-2.fc23.x86_64
libvirt-daemon-driver-interface-1.2.18.2-2.fc23.x86_64
libvirt-daemon-driver-secret-1.2.18.2-2.fc23.x86_64
libvirt-daemon-config-network-1.2.18.2-2.fc23.x86_64
libvirt-daemon-driver-network-1.2.18.2-2.fc23.x86_64

But – be careful..   I tried this by just using # dnf erase libvirt* but found that this would have also de-installed other software – including parts of qemu and xen – as well..   This was unwarranted, as I confirmed by using rpm to de-install all of libvirt, and this command completed successfully, without needing to use the –nodeps parameter..    The rpm command I used to do this was # rpm -e $(rpm -qa |grep libvirt) gnome-boxes $(rpm -qa |grep virt-)…to get rid of associated utilities as well…

Then just re-start the network..

systemctl restart network.service

Robert Gadsdon.   January 28, 2016.
(rpm command example updated – Jan 30)