Update doc on Mac OS X virtio-net support
https://github.com/pmj/virtio-net-osx
Has been around for years now
I can also confirm it works on crazy old versions, it ran on a 10.7dp1 virtual machine flawlessly. Crazy good performance too.
Within libvirt it requires setting network device manually away from “virtio” to “virtio-net-pci”
I wasn't aware that the "virtio-net-pci" device existed in libvirt, I've only tried "virtio" before.
I've just added it to my Catalina VM and macOS picked it right up, no additional drivers needed. Apperantly Apple added virtio network support via the /System/Library/Extensions/AppleVirtIO.kext in either 10.14 or 10.15.
So thank you for the hint to change the device name. I will change the readme accordingly.