mountd(8) on OpenBSD
The text 8312d1f72915, as OpenBSD 3.3, OpenBSD 3.2, OpenBSD 3.1, OpenBSD 3.0, OpenBSD 2.9, OpenBSD 2.8, OpenBSD 2.7 shipped it.
service remote NFS mount requests
Flags it lists
-
-d -
-n