http://cypherpunk-handbook.i2p/articles/openbsd.html
Fedora Secureblue, QubesOS (per NetVM) and Tails have this,
Whonix and others don't. 29 - rcctl(8) rcctl is a simple utility to maintain rc.conf.local , the system daemon configuration database
for OpenBSD. Compared with systemd or SysVinit, this section argues
that rcctl is more lightweight, secure, stable, and easier
to understand and use.