route6d(8) on OpenBSD
The text 498011e3e20c, as OpenBSD 3.9, OpenBSD 3.8, OpenBSD 3.7, OpenBSD 3.6, OpenBSD 3.5, OpenBSD 3.4 shipped it.
RIP6 routing daemon
Flags it lists
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-A -
-D -
-L -
-N -
-O -
-R -
-S -
-T -
-a -
-d -
-h -
-l -
-n -
-q -
-s -
-t