After installing the newest version of Network Link Conditioner on macOS Sierra, it doesn't appear to work. It has no effect on my network connectivity, even when set to 100% loss. Anyone experience this? Is this simply a case of Apple not updating NLC for Xcode 8?
This issue is fixed in the latest version of the Network Link Conditioner - it's in the "Additional Tools for Xcode 8.1" download from https://developer.apple.com/download/more/.
I've tested all the built-in profiles and they work as expected.