Yes, but from the same commenter earlier: "I want to try this api on MAC OS 10.11. I understand the reason why I need to ask apple for some permission to publish the app with this api to app store, but I can't believe that I have to ask them for permission to run this api on my development machine."
It's possible that commenter is misguided. The documentation on NETunnelProviderManager[1] says it needs the extension and that you should send an email to get it, but there's no indication as to whether there's anything stopping you from granting yourself this entitlement on a development machine (obviously Apple needs to approve it for an app on the MAS; I don't know what limitations there are for non-MAS apps in this regard).
