int6kid(1) on Linux
The text 921d0e60dba3, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it. The page shows this text now.
Echo Device Key
Flags it lists
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--help -
--version -
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-A -
-D -
-M -
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-S -
-e -
-i -
-n -
-q -
-v -
-x