iodine(8) on Linux
The text db5bde7cd497, as Debian 5.0 (Lenny) shipped it.
tunnel IPv4 over DNS
Flags it lists
-
-D -
-P -
-c -
-d -
-f -
-h -
-l -
-m -
-p -
-s -
-t -
-u -
-v