Apple will be changing how VPN On Demand for iOS works due to a lawsuit by VirnetX. iOS devices running 6.1 or later that have VPN On Demand set to “Always” will now behave as though they were set to “Establish if needed”. The device will only use a VPN On Demand connection when it is necessary. This change will be made with an update at some point this month.
Apple says that they plan to address the functionality lost by this change with alternatives that will come in a future software update. If you currently use VPN On Demand, Apple suggests that you prepare for the change by creating a new VPN profile set to “Establish if needed” that is otherwise identical to your current profile in order to see how this change will impact you.