ndp(8) on macOS
The text 223f47729b95, as Mac OS X 10.8.5, Mac OS X 10.8.4, Mac OS X 10.8.3, Mac OS X 10.8.2, Mac OS X 10.8.1, Mac OS X 10.8 shipped it.
control/diagnose IPv6 neighbor discovery protocol
Flags it lists
-
-A -
-H -
-P -
-R -
-a -
-c -
-d -
-f -
-l -
-n -
-p -
-r -
-s -
-t -
-x