tftpd(8) on macOS
The text fce254ce8d02, as macOS 15.3, macOS 15.2, macOS 15.1, macOS 15.0, macOS 14.6, macOS 14.5, macOS 14.4 shipped it.
Internet Trivial File Transfer Protocol server
Flags it lists
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-C -
-F -
-U -
-W -
-c -
-d -
-i -
-l -
-n -
-o -
-s -
-u -
-w