bird(8) on Linux
The text 6f083694c778, as Debian 10 (Buster), Debian 9 (Stretch) shipped it.
BIRD Internet Routing Daemon birdc - BIRD Internet Routing Daemon remote control bird6 - BIRD Internet Routing Daemon, IPv6 version birdc6 - BIRD Internet Routing Daemon remote control, IPv6 version
Flags it lists
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-D -
-c -
-d -
-p -
-r -
-s -
-v