[libvirt-users] virtual machine id

Below is my start.xml: <domain type='kvm' id='12'>             <name>start-ubuntu</name>             <memory>1048576</memory>             <currentMemory>1048576</currentMemory>             <vcpu>1</vcpu>            <os>               <type>hvm</type>               <boot dev='hd'/>               ...... I start the machine   virsh create start.xml virsh list Id    Name                           State ----------------------------------------------------  20    start-ubuntu                   running I set id=12,but it is actually 20,I don't know why. Thanks.