route6d(8) on OpenBSD
The text 3cb72a785502, as OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4 shipped it.
RIP6 routing daemon
Flags it lists
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-A -
-D -
-L -
-O -
-R -
-S -
-a -
-d -
-h -
-l -
-n -
-q -
-s -
-t