sctp_test(1) on Linux
The text ecdd9ac9e933, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
Send and receive messages via SCTP
Flags it lists
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-H -
-P -
-a -
-c -
-d -
-h -
-l -
-m -
-o -
-p -
-s -
-ve -
-x