Using n2n on MacOS ------------------ In order to use n2n on MacOS you need to first install support for the tap interface. if you are a brew (https://brew.sh) user you can do it in a couple of steps - brew tap homebrew/cask - brew cask install tuntap Note that in the latest OS versions (for instance MacOS High Sierra), you may need to need to enable their kernel extension in System Preferences → Security & Privacy → General For more information refer to vendor documentation or the Apple Technical Note: https://developer.apple.com/library/content/technotes/tn2459/_index.html