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macOS is also moving into this direction: https://developer.apple.com/system-extensions/

"DriverKit provides a fully modernized replacement for IOKit to create device drivers. System extensions and drivers built with DriverKit run in user space, where they can’t compromise the security or stability of macOS."

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Sadly, DriverKit doesn't actually address all the reasons why you'd want a kernel extension.

Do you have an example?

Little Snitch, the most critical piece of Mac software after the kernel.

Tbh, is that not viable through packet fence? I also use little snitch and had not considered this.

Little Snitch will be fine. They will use the new API.

https://blog.obdev.at/little-snitch-and-the-deprecation-of-k...

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