rpc.bootparamd(8) on OpenBSD
The text 386b4453edd5, as OpenBSD 4.0, OpenBSD 3.9, OpenBSD 3.8, OpenBSD 3.7, OpenBSD 3.6, OpenBSD 3.5, OpenBSD 3.4 shipped it.
boot parameter server
Flags it lists
-
-d -
-f -
-r -
-s