https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285394

--- Comment #24 from Andriy Gapon <a...@freebsd.org> ---
Given the info in comment #20, I now think that using /dev/ttyv0 as opposed to
/dev/console may be a good idea for a couple of reasons.

The primary reason is that /dev/ttyv0 wouldn't be revoked by /etc/rc exiting.

Another reason is that /dev/console is not guaranteed to be associated with the
video console (whether legacy or EFI).
I think that it's possible to have a system with both video and serial consoles
and configure it have serial console as the console while using video console
for running X, etc.
That wouldn't be a common configuration but still possible.

On the other hand, if a system has video console then ttyv0 must always be
there and it's on the video console.

At least, that's my understanding.

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