User process PPP with Multiprotocol NAT and Time schedule extention.
Based on the PPP program for FreeBSD 2.2.7-RELEASE.

The NAT extention is from
	<URL:http://www2a.meshnet.or.jp/~junichi/freebsd/lowtech/nat.html>.
	Example setup line: "set taddr 192.168.0.0/24"

The time schedule extention is from
	<URL:http://www.bremen.or.jp/shigeru/FreeBSD/ppp.html>.
	Example setup line: "set schedule deny 7:58 23:01"

- SADA Kenji
sada@FreeBSD.ORG