The libvirt and qemu versions involved here (same on both nodes):
ii libvirt0:amd64 4.0.0-1ubuntu8.12
ii qemu-system 1:2.11+dfsg-1ubuntu7.15
The libvirt and qemu versions involved here (same on both nodes):
ii libvirt0:amd64 4.0.0-1ubuntu8.12
ii qemu-system 1:2.11+ dfsg-1ubuntu7. 15