npf(4)

[Frédéric Fauberteau <triaxx%NetBSD.org@localhost>]

I am searching for documentation about /etc/rc.d/npf_boot.

I read in /etc/defaults/npf.boot.conf:
# $NetBSD: npf.boot.conf,v 1.2 2019/04/07 02:08:08 sevan Exp $
#
# /etc/defaults/npf.boot.conf --
# initial configuration for npf(4)
#
# DO NOT EDIT THIS FILE DIRECTLY; IT MAY BE REPLACED DURING A SYSTEM UPGRADE.
# EDIT /etc/npf.boot.conf INSTEAD.
#

But man 4 npf gives me:
man: no entry for npf in the manual.

'grep -r "npf.boot" /usr/share/man/*' gives me nothing too. Is there a place where this is documented?

Fred