model/$model_name/ has how to make a file system on floppy image. It is minimal NetBSD. For example, the decision whether pppd is built in or not is described here.
natbox model has small free disk space for other progmras but adslrouter model is almost full since it has pppd and rp-pppoe et. al.
See chrunchgen(1) manual page for the meaning of these files.
Copyright (C) 1993-2017 Ken'ichi Fukamachi mail:< fukachan at fml.org >