Please provide a way to set the virtual network interface link state in the following situations:

• Launch a VM with the interface link set to down
• Set the interface link state to up or down while the VM is running

Libvirt provides the APIs to do this. Using virsh, the equivalent is:

$ virsh domif-setlink <dom> <dev> up
$ virsh domif-setlink <dom> <dev> down

But this is not exposed in OpenShift Virtualization Console or virtctl.

Also, to launch a VM with the link down, one needs to set "link" as below. This example is from RHV doing the same:

    <interface type='bridge'>
      <mac address='56:6f:7f:b4:00:00'/>
      <source bridge='ovirtmgmt'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <filterref filter='vdsm-no-mac-spoofing'/>
      <link state='down'/>
      <mtu size='1500'/>
      <alias name='ua-8cd6685e-c48c-4f26-9200-81a911ac6427'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </interface>

The customer does not want to add/remove/hot(un)plug such interfaces, just wants to set them the link to up/down as required.