In Openstack 17.1.4 (and probably before) you can't set hw_vif_multiqueue_enabled to false (it stays True) or unset it:
(overcloud) [stack@undercloud-0 ~]$ openstack image unset --property hw_vif_multiqueue_enabled 5afe5f84-f1c7-4a46-a181-c93d353c776d
property unset failed, 'hw_vif_multiqueue_enabled' is a nonexistent property
Failed to unset 1 of 1 properties.

It was reported back in 2022 but was never fixed:
https://bugs.launchpad.net/glance/+bug/1996033

Can this be looked into please ?