Hotspot on Nexus 5x

Not going to get into Why carriers continue to charge extra for this, but to enable the built-in hotspot feature on Android Marshmallow (6.0), I had to root the phone, then add net.tethering.noprovisioning=true to the end of /system/build.prop (and reboot). settings put global tether_dun_required into a shell is the way to enable it for phones running KitKat, but that didn’t seem to do anything.