sshd(8) on macOS
The text cb991d29ec6a, as macOS 10.12.3, macOS 10.12.2 shipped it.
OpenSSH SSH daemon
Flags it lists
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-4 -
-6 -
-C -
-D -
-E -
-T -
-b -
-c -
-d -
-e -
-f -
-g -
-h -
-i -
-k -
-o -
-p -
-q -
-t -
-u