My understanding is that ‘halt’ had been an alias for ‘halt -p’, but that changed recently. -p tells the command to power off. Without it, it just shuts down process.

halt -p

I may, but I can’t see it! 😉

This looks similar: https://forums.fedoraforum.org/showthread.php?309254-ping-not-permitted-for-user

To be |TRUE| you’ll need some hardware that is mostly open. I believe the Asus C201p is quite close.