In some mail I received from Mike Long, sie wrote
[...]
> I think a far simpler, and hence better, solution would be to have
> init run a separate /etc/rc.secure script after increasing the
> securelevel.
> 
> While we're at it, we could have init run /etc/rc.shutdown when making
> the transition from multi- to single-user.
> 
> Comments?

I've seen other comments on this thread mention the former and I think it
(and that name) is a workable solution which I hope everyone finds suitable
for NetBSD.

On the latter suggestion, I like that one too.

Darren