Hi again =). I have another problem then testing libvirt with massive vm start: 2015-07-18 08:25:21.687+0000: 36893: error : qemuMonitorIO:750 : internal error: early end of file from monitor: possible problem: 2015-07-18T08:25:21.586487Z qemu-system-x86_64: -vnc [::]:4,password: Failed to start VNC server: Failed to bind socket: Address already in use As i understand, when libvirt try to detect free port for vnc it fails, because another process already binds to it. How can i avoid this errors? Does it fixed in never libvirt releases? libvirt 1.216 qemu 2.4.0-rc0 -- Vasiliy Tolstov, e-mail: v.tolstov@xxxxxxxxx -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list