KVM - User mode network port forwarding

kvm-image.xml

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
    <!-- ... -->
    <devices>
        <!-- ... -->
        <interface type="user">
            <!-- ... -->
            <model type="e1000e"/>
            <!-- ... -->
        </interface>
        <!-- ... -->
    </devices>
    <!-- ... -->
    <qemu:commandline>
        <qemu:arg value="-netdev"/>
        <qemu:arg value="user,id=net0,hostfwd=tcp::2222-:22"/>
        <qemu:arg value="-device"/>
        <qemu:arg value="e1000,netdev=net0"/>
    </qemu:commandline>
</domain>