man rc.conf says option valid, but error generated when used as an RC tunable?

Stilez

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Apr 8, 2016
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So I want a large scrollback buffer on my console (12-RELEASE). Around line 1757 of man rc.conf it states that:

allscreens_kbdflags (str) If set, kbdcontrol(1) is run with these options for each of the virtual terminals (/dev/ttyv*). For example, “-h 200” will set the syscons(4) or vt(4) scrollback (history) buffer to 200 lines.

My tunables contain exactly that entry (the large value is fine, I can type that into the console after boot for example to get a long scrollback buffer):

TUNABLE: allscreens_kbdflags VALUE: -h 20000 TYPE: RC STATUS: enabled

(No typos, copypasted direct from tunables page in Web UI)

When it boots, I get this message:

Configuring vt: keymap keyrate allscreens_kbdkbdcontrol: illegal option -h
kbdcontrol: Illegal option -- h

Any ideas?
 
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