hopopt 0 HOPOPT # IPv6 Hop-by-Hop Option icmp 1 ICMP # Internet Control Message igmp 2 IGMP # Internet Group Management ggp 3 GGP # Gateway-to-Gateway ipv4 4 IPv4 # IPv4 encapsulation st 5 ST # Stream tcp 6 TCP # Transmission Control cbt 7 CBT # CBT egp 8 EGP # Exterior Gateway Protocol igp 9 IGP # any private interior gateway bbn-rcc-mon 10 BBN-RCC-MON # BBN RCC Monitoring nvp-ii 11 NVP-II # Network Voice Protocol pup 12 PUP # PUP # 13 ARGUS (deprecated) # ARGUS emcon 14 EMCON # EMCON xnet 15 XNET # Cross Net Debugger chaos 16 CHAOS # Chaos udp 17 UDP # User Datagram mux 18 MUX # Multiplexing dcn-meas 19 DCN-MEAS # DCN Measurement Subsystems hmp 20 HMP # Host Monitoring prm 21 PRM # Packet Radio Measurement xns-idp 22 XNS-IDP # XEROX NS IDP trunk-1 23 TRUNK-1 # Trunk-1 trunk-2 24 TRUNK-2 # Trunk-2 leaf-1 25 LEAF-1 # Leaf-1 leaf-2 26 LEAF-2 # Leaf-2 rdp 27 RDP # Reliable Data Protocol irtp 28 IRTP # Internet Reliable Transaction iso-tp4 29 ISO-TP4 # ISO Transport Protocol Class 4 netblt 30 NETBLT # Bulk Data Transfer Protocol mfe-nsp 31 MFE-NSP # MFE Network Services Protocol merit-inp 32 MERIT-INP # MERIT Internodal Protocol dccp 33 DCCP # Datagram Congestion Control Protocol 3pc 34 3PC # Third Party Connect Protocol idpr 35 IDPR # Inter-Domain Policy Routing Protocol xtp 36 XTP # XTP ddp 37 DDP # Datagram Delivery Protocol idpr-cmtp 38 IDPR-CMTP # IDPR Control Message Transport Proto tp++ 39 TP++ # TP++ Transport Protocol il 40 IL # IL Transport Protocol ipv6 41 IPv6 # IPv6 encapsulation sdrp 42 SDRP # Source Demand Routing Protocol ipv6-route 43 IPv6-Route # Routing Header for IPv6 ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6 idrp 45 IDRP # Inter-Domain Routing Protocol rsvp 46 RSVP # Reservation Protocol gre 47 GRE # Generic Routing Encapsulation dsr 48 DSR # Dynamic Source Routing Protocol bna 49 BNA # BNA esp 50 ESP # Encap Security Payload ah 51 AH # Authentication Header i-nlsp 52 I-NLSP # Integrated Net Layer Security TUBA # 53 SWIPE (deprecated) # IP with Encryption narp 54 NARP # NBMA Address Resolution Protocol mobile 55 MOBILE # IP Mobility tlsp 56 TLSP # Transport Layer Security Protocol skip 57 SKIP # SKIP ipv6-icmp 58 IPv6-ICMP # ICMP for IPv6 ipv6-nonxt 59 IPv6-NoNxt # No Next Header for IPv6 ipv6-opts 60 IPv6-Opts # Destination Options for IPv6 # 61 # any host internal protocol cftp 62 CFTP # CFTP # 63 # any local network sat-expak 64 SAT-EXPAK # SATNET and Backroom EXPAK kryptolan 65 KRYPTOLAN # Kryptolan rvd 66 RVD # MIT Remote Virtual Disk Protocol ippc 67 IPPC # Internet Pluribus Packet Core # 68 # any distributed file system sat-mon 69 SAT-MON # SATNET Monitoring visa 70 VISA # VISA Protocol ipcv 71 IPCV # Internet Packet Core Utility cpnx 72 CPNX # Computer Protocol Network Executive cphb 73 CPHB # Computer Protocol Heart Beat wsn 74 WSN # Wang Span Network pvp 75 PVP # Packet Video Protocol br-sat-mon 76 BR-SAT-MON # Backroom SATNET Monitoring sun-nd 77 SUN-ND # SUN ND PROTOCOL-Temporary wb-mon 78 WB-MON # WIDEBAND Monitoring wb-expak 79 WB-EXPAK # WIDEBAND EXPAK iso-ip 80 ISO-IP # ISO Internet Protocol vmtp 81 VMTP # VMTP secure-vmtp 82 SECURE-VMTP # SECURE-VMTP vines 83 VINES # VINES ttp 84 TTP # Transaction Transport Protocol iptm 84 IPTM # Internet Protocol Traffic Manager nsfnet-igp 85 NSFNET-IGP # NSFNET-IGP dgp 86 DGP # Dissimilar Gateway Protocol tcf 87 TCF # TCF eigrp 88 EIGRP # EIGRP ospfigp 89 OSPFIGP # OSPFIGP sprite-rpc 90 Sprite-RPC # Sprite RPC Protocol larp 91 LARP # Locus Address Resolution Protocol mtp 92 MTP # Multicast Transport Protocol ax.25 93 AX.25 # AX.25 Frames ipip 94 IPIP # IP-within-IP Encapsulation Protocol # 95 MICP (deprecated) # Mobile Internetworking Control Pro. scc-sp 96 SCC-SP # Semaphore Communications Sec. Pro. etherip 97 ETHERIP # Ethernet-within-IP Encapsulation encap 98 ENCAP # Encapsulation Header # 99 # any private encryption scheme gmtp 100 GMTP # GMTP ifmp 101 IFMP # Ipsilon Flow Management Protocol pnni 102 PNNI # PNNI over IP pim 103 PIM # Protocol Independent Multicast aris 104 ARIS # ARIS scps 105 SCPS # SCPS qnx 106 QNX # QNX a/n 107 A/N # Active Networks ipcomp 108 IPComp # IP Payload Compression Protocol snp 109 SNP # Sitara Networks Protocol compaq-peer 110 Compaq-Peer # Compaq Peer Protocol ipx-in-ip 111 IPX-in-IP # IPX in IP vrrp 112 VRRP # Virtual Router Redundancy Protocol pgm 113 PGM # PGM Reliable Transport Protocol # 114 # any 0-hop protocol l2tp 115 L2TP # Layer Two Tunneling Protocol ddx 116 DDX # D-II Data Exchange (DDX) iatp 117 IATP # Interactive Agent Transfer Protocol stp 118 STP # Schedule Transfer Protocol srp 119 SRP # SpectraLink Radio Protocol uti 120 UTI # UTI smp 121 SMP # Simple Message Protocol # 122 SM (deprecated) # Simple Multicast Protocol ptp 123 PTP # Performance Transparency Protocol isis over ipv4 124 ISIS over IPv4 fire 125 FIRE crtp 126 CRTP # Combat Radio Transport Protocol crudp 127 CRUDP # Combat Radio User Datagram sscopmce 128 SSCOPMCE iplt 129 IPLT sps 130 SPS # Secure Packet Shield pipe 131 PIPE # Private IP Encapsulation within IP sctp 132 SCTP # Stream Control Transmission Protocol fc 133 FC # Fibre Channel rsvp-e2e-ignore 134 RSVP-E2E-IGNORE mobility header 135 Mobility Header udplite 136 UDPLite mpls-in-ip 137 MPLS-in-IP manet 138 manet # MANET Protocols hip 139 HIP # Host Identity Protocol shim6 140 Shim6 # Shim6 Protocol wesp 141 WESP # Wrapped Encapsulating Security Payload rohc 142 ROHC # Robust Header Compression # 143-252 # Unassigned # 253 # Use for experimentation and testing # 254 # Use for experimentation and testing reserved 255 Reserved