protocols revision 1.1 
11.1Scgd#
21.1Scgd# Internet (IP) protocols
31.1Scgd#
41.1Scgd#	@(#)protocols	5.1 (Berkeley) 4/17/89
51.1Scgd#
61.1Scgdip	0	IP		# internet protocol, pseudo protocol number
71.1Scgdicmp	1	ICMP		# internet control message protocol
81.1Scgdggp	3	GGP		# gateway-gateway protocol
91.1Scgdtcp	6	TCP		# transmission control protocol
101.1Scgdegp	8	EGP		# exterior gateway protocol
111.1Scgdpup	12	PUP		# PARC universal packet protocol
121.1Scgdudp	17	UDP		# user datagram protocol
131.1Scgdhmp	20	HMP		# host monitoring protocol
141.1Scgdxns-idp	22	XNS-IDP		# Xerox NS IDP
151.1Scgdrdp	27	RDP		# "reliable datagram" protocol
16