0	HOPOPT	IPv6 Hop-by-Hop Option  
1	ICMP	Internet Control Message Protocol 
2	IGMP	Internet Group Management Protocol 
3	GGP	Gateway-to-Gateway    
4	IP	IP in IP (encapsulation) 
5	ST	Stream    
6	TCP	Transmission Control Protocol 
7	CBT	Core Based Trees
8	EGP	Exterior Gateway Protocol  
9	IGP	any private interior gateway 
10	BBN-RCC-MON	BBN RCC Monitoring  
11	NVP-II	Network Voice Protocol  
12	PUP	PARC Universal Protocol (Xerox)    
13	ARGUS	ARGUS    
14	EMCON	Emission Control Protocol    
15	XNET	Cross Net Debugger  
16	CHAOS	Chaos    
17	UDP	User Datagram Protocol
18	MUX	Multiplexing    
19	DCN-MEAS	Dynamic Circuit Network-Measurement Subsystems  
20	HMP	Host Monitoring   
21	PRM	Packet Radio Measurement  
22	XNS-IDP	XEROX NS IDP  
23	TRUNK-1	Trunk-1    
24	TRUNK-2	Trunk-2    
25	LEAF-1	Leaf-1    
26	LEAF-2	Leaf-2    
27	RDP	Reliable Data Protocol  
28	IRTP	Internet Reliable Transaction  
29	ISO-TP4	ISO Transport Protocol Class 4
30	NETBLT	Bulk Data Transfer Protocol 
31	MFE-NSP	MFE Network Services Protocol 
32	MERIT-INP	MERIT Internodal Protocol  
33	DCCP	Datagram Congestion Control Protocol 
34	3PC	Third Party Connect Protocol 
35	IDPR	Inter-Domain Policy Routing Protocol 
36	XTP	Xpress Transfer Protocol    
37	DDP	Datagram Delivery Protocol  
38	IDPR-CMTP	IDPR Control Message Transport Proto
39	TP++	TP++ Transport Protocol  
40	IL	IL Transport Protocol  
41	IPv6	Encapsulated Ipv6    
42	SDRP	Source Demand Routing Protocol 
43	IPv6-Route	Routing Header for IPv6 
44	IPv6-Frag	Fragment Header for IPv6 
45	IDRP	Inter-Domain Routing Protocol  
46	RSVP	Resource Reservation Protocol   
47	GRE	General Routing Encapsulation  
48	MHRP	Mobile Host Routing Protocol 
49	BNA	BNA (Mobile)
50	ESP	IPSEC: Encapulated Security Payload  
51	AH	IPSEC: Authentication Header   
52	I-NLSP	Integrated Net Layer Security TUBA
53	SWIPE	IP with Encryption  
54	NARP	NBMA Address Resolution Protocol 
55	MOBILE	IP Mobility   
56	TLSP	Transport Layer Security Protocol 
57	SKIP	Simple Key-Management for Internet Protocol (Kryptonet)
58	IPv6-ICMP	ICMP for IPv6  
59	IPv6-NoNxt	No Next Header for IPv6
60	IPv6-Opts	Destination Options for IPv6 
61	any	host internal protocol  
62	CFTP	Clients Oriented File Transport Protocol    
63	any	local network   
64	SAT-EXPAK	SATNET and Backroom EXPAK 
65	KRYPTOLAN	Kryptolan    
66	RVD	MIT Remote Virtual Disk Protocol
67	IPPC	Internet Pluribus Packet Core 
68	any	distributed file system  
69	SAT-MON	SATNET Monitoring   
70	VISA	VISA Protocol   
71	IPCV	Internet Packet Core Utility 
72	CPNX	Computer Protocol Network Executive 
73	CPHB	Computer Protocol Heart Beat 
74	WSN	Wang Span Network  
75	PVP	Packet Video Protocol  
76	BR-SAT-MON	Backroom SATNET Monitoring  
77	SUN-ND	SUN ND PROTOCOL-Temporary  
78	WB-MON	WIDEBAND Monitoring   
79	WB-EXPAK	WIDEBAND EXPAK   
80	ISO-IP	ISO Internet Protocol  
81	VMTP	Versatile Message Transport Protocol    
82	SECURE-VMTP	Secure Versatile Message Transport Protocol    
83	VINES	Virtual Integrated NEtwork Service
84	TTP	Time Triggered Protocol    
85	NSFNET-IGP	NSFNET-IGP    
86	DGP	Dissimilar Gateway Protocol  
87	TCF	Target Communication Framework    
88	EIGRP	Enhanced Interior Gateway Routing Protocol 
89	OSPFIGP	Open Shortest Path First Interior Gateway Protocol    
90	Sprite-RPC	Sprite RPC Protocol  
91	LARP	Locus Address Resolution Protocol 
92	MTP	Multicast Transport Protocol  
93	AX.25	AX.25 Frames   
94	IPIP	IP-within-IP Encapsulation Protocol  
95	MICP	Mobile Internetworking Control Pro. 
96	SCC-SP	Semaphore Communications Sec. Pro. 
97	ETHERIP	Ethernet-within-IP Encapsulation   
98	ENCAP	Encapsulation Header 
99	any	private encryption scheme  
100	GMTP	General Mail Transfer Protocol
101	IFMP	Ipsilon Flow Management Protocol 
102	PNNI	Private Network to Network Interface over IP  
103	PIM	Protocol Independent Multicast  
104	ARIS	Aggregate Route-Based IP Switching
105	SCPS	Space Communications Protocol Specifications
106	QNX	QNX    
107	A/N	Active Networks   
108	IPComp	IP Payload Compression Protocol 
109	SNP	Sitara Networks Protocol  
110	Compaq-Peer	Compaq Peer Protocol  
111	IPX-in-IP	IniXcket Exchange in IP  
112	VRRP	Virtual Router Redundancy Protocol 
113	PGM	PGM Reliable Transport Protocol 
114	any	0-hop protocol 
115	L2TP	Layer Two Tunneling Protocol 
116	DDX	D-II Data Exchange (DDX) 
117	IATP	Interactive Agent Transfer Protocol 
118	STP	Schedule Transfer Protocol 
119	SRP	SpectraLink Radio Protocol 
120	UTI	Uinversal Transport Interface 
121	SMP	Simple Message Protocol  
122	PIM-SM	Protocol Intependent Multicast-Sparse Mode 
123	PTP	Performance Transparency Protocol 
124	ISIS	Intermediate System to Intermediate System Protocol 
125	FIRE	Fire Protocol
126	CRTP	Combat Radio Transport Protocol 
127	CRUDP	Combat Radio User Datagram 
128	SSCOPMCE	Service Specific Connection Oriented Protocol in a Multilink and Connectionless Environment	   
129	IPLT	Internet Protocol ?
130	SPS	Secure Packet Shield 
131	PIPE	Private IP Encapsulation within IP
132	SCTP	Stream Control Transmission Protocol 
133	FC	Fibre Channel 
134	RSVP-E2E-IGNORE	Resource Reservation Protocol End to End Ignore	
135	Mobility	Internet Protocol Mobility Support 
136	UDPLitex	UDP Litex		
137	MPLS-in-IP	MPLS in IP 
138 	MANET	MANET Protocols
139 	HIP	Host Identity Protocol
140 	Shim6	Site Multihoming by IPv6 Intermediation
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253	Exp	Experimentation and testing 
254	Exp	Experimentation and testing 
255	Res	Reserved    
