nghook(8) on FreeBSD
The text 514000569fb4, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
connect to a netgraph(4) node
Flags it lists
-
-S -
-a -
-d -
-e -
-l -
-m -
-n -
-s