I can reproduce this bug also on Ubuntu 16.04 with libvirt. The interesting thing is that this bug triggers faster, if I use tunneled migration instead direct. Using the virt-manager for migration. The test VM is a Win10 with virtio driver from fedora 0.1.118. win10-1 4b3533c1-20d4-4556-9d99-4fb3d04b19dc 2097152 2097152 6 hvm Haswell-noTSX destroy restart restart /usr/bin/kvm-spice