radclient(1) on Linux
The text 54e01762dcdc, as Debian 10 (Buster) shipped it.
send packets to a RADIUS server, show reply
Flags it lists
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-D -
-F -
-P -
-S -
-c -
-d -
-f -
-h -
-i -
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-p -
-q -
-r -
-s -
-t -
-v -
-x