setkey(8) on FreeBSD
The text 21f0e52ce0c6, as FreeBSD 4.11-RELEASE, FreeBSD 4.10-RELEASE, FreeBSD 4.9-RELEASE, FreeBSD 4.8-RELEASE shipped it.
manually manipulate the IPsec SA/SP database
Flags it lists
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-D -
-F -
-a -
-d -
-f -
-h -
-l -
-lh -
-ls -
-m -
-r -
-u -
-v -
-x