[ovirt-users] VM Migration Failed

I am running ovirt 3.6 on our cluster and VM migration is failing.  The VDSM logs show an error as follows. jsonrpc.Executor/7::ERROR::2016-12-16 08:41:04,398::vm::4714::virt.vm::(_updateDevicesDomxmlCache) vmId=`dc419d2b-522a-4e96-b06a-243ec8ede44e`::Alias not found for device type redir during migration at destination host Does anybody know what would cause this? Both hosts are online and have VMs running.