rbootd(8) on FreeBSD
The text 807309c04b82, as FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.
HP remote boot server
Flags it lists
-
-a -
-d -
-i