xen-org/xen-api — pull request #604 by johnelse (2012-05-11 08:54:58+00:00)
Title: Changes to VIF locking for CR-1121

* Disabling a VIF writes "1" to /local/domain/$DOMID/device/vif/$DEVID/disconnect - this is picked up by the windows PV drivers, which show the network cable as disconnected.
* Disabling a VIF is now possible on unlicensed host - locking a VIF still requires licensing.