## protocols	This file describes the various protocols that are#		available from the TCP/IP subsystem.  It should be#		consulted instead of using the numbers in the ARPA#		include files, or, worse, just guessing them.#ip	0	IP	# internet protocol, pseudo protocol numbericmp	1	ICMP	# internet control message protocoligmp	2	IGMP	# internet group multicast protocolggp	3	GGP	# gateway-gateway protocoltcp	6	TCP	# transmission control protocolpup	12	PUP	# PARC universal packet protocoludp	17	UDP	# user datagram protocolidp	22	IDP	# WhatsThis?raw	255	RAW	# RAW IP interface# End.