Installed High Sierra and it networking worked out of the box, upgraded to Mojave and Ethernet no longer works. I've installed the MausiNetwork Kext as well

Specs:

CPU: Intel i7-9700k

Graphics: (onboard - Intel UHD 630)

Motherboard: Asus Prime Z370-P II Intel Z370

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If I go into System -> Network it says the cable is unplugged(it definitely isn't and works) I even reinstalled high sierra and Ethernet was working out of the box again. I used kextbeast to install the MausoNetwork driver and can confirm the kext is sitting in `System/Library/Extensions/`

I haven't tested Audio, or had a proper test with graphics yet as I want the basics up and running first.

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