diff --git a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
index 77942499a93..952fe9e7cc9 100644
--- a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
+++ b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
@@ -3478,7 +3478,9 @@ public class LibvirtComputingResource extends ServerResourceBase implements Serv
         cmd.add("--vmname", vmName);
         cmd.add("--vmid", vmId);
         cmd.add("--vmip", guestIP);
-        cmd.add("--vmip6", guestIP6);
+        if (StringUtils.isNotBlank(guestIP6)) {
+            cmd.add("--vmip6", guestIP6);
+        }
         cmd.add("--sig", sig);
         cmd.add("--seq", seq);
         cmd.add("--vmmac", mac);