If possible can you share any documents/info regarding "Network Kernel Extentions" /NKE's
The best way to create an IP-only interface is via a Network Extension provider. The main advantage of this approach is that all of your code runs in user space, which is a lot more fun than doing this in the kernel.
You can learn more about Network Extension providers WWDC 2015 Session 717 What’s New in Network Extension and VPN.
Note That end of that video indicates that you need a special entitlement for Network Extension providers. That’s no longer the case. See Network Extension Framework Entitlements for details.
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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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