# $NetBSD: protocols,v 1.35 2022/12/01 13:21:07 jschauma Exp $
# See also: protocols(5), https://www.iana.org/assignments/protocol-numbers/
#
# Protocol Numbers
#
# Last Updated
# 2022-09-28
#
# Available Formats
# [IMG]
# XML [IMG]
# HTML [IMG]
# Plain text
#
# Registry included below
#
# * Assigned Internet Protocol Numbers
#
# Assigned Internet Protocol Numbers
#
# Registration Procedure(s)
#
# IESG Approval or Standards Action
#
# Reference
# [RFC5237][RFC7045]
#
# Note
#
# In the Internet Protocol version 4 (IPv4) [RFC791] there is a field
# called "Protocol" to identify the next level protocol. This is an 8
# bit field. In Internet Protocol version 6 (IPv6) [RFC8200], this field
# is called the "Next Header" field.
#
#
# Note
#
# Values that are also IPv6 Extension Header Types should be listed in the
# IPv6 Extension Header Types registry at [IANA registry ipv6-parameters].
#
#
# Available Formats
# [IMG]
# CSV
#
# Decimal Keyword Protocol IPv6 Extension Reference
# Header
# protocol num aliases # comments
hopopt 0 HOPOPT # IPv6 Hop-by-Hop Option Y [RFC8200]
icmp 1 ICMP # Internet Control Message [RFC792]
igmp 2 IGMP # Internet Group Management [RFC1112]
ggp 3 GGP # Gateway-to-Gateway [RFC823]
ipv4 4 IPv4 # IPv4 encapsulation [RFC2003]
st 5 ST # Stream [RFC1190][RFC1819]
tcp 6 TCP # Transmission Control [RFC9293]
cbt 7 CBT # CBT [Tony_Ballardie]
egp 8 EGP # Exterior Gateway Protocol [RFC888][David_Mills]
# any private interior gateway
igp 9 IGP # (used by Cisco for their [Internet_Assigned_Numbers_Authority]
# IGRP)
bbn-rcc-mon 10 BBN-RCC-MON # BBN RCC Monitoring [Steve_Chipman]
nvp-ii 11 NVP-II # Network Voice Protocol [RFC741][Steve_Casner]
# [Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An Internetwork
pup 12 PUP # PUP Architecture", XEROX Palo Alto Research Center, CSL-79-10, July 1979;
# also in IEEE Transactions on Communication, Volume COM-28, Number 4,
# April 1980.][[XEROX]]
argus 13 ARGUS # (deprecated) ARGUS [Robert_W_Scheifler]
emcon 14 EMCON # EMCON [<mystery contact>]
xnet 15 XNET # Cross Net Debugger [Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158,
# October 1980.][Jack_Haverty]
chaos 16 CHAOS # Chaos [J_Noel_Chiappa]
udp 17 UDP # User Datagram [RFC768][Jon_Postel]
mux 18 MUX # Multiplexing [Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90,
# USC/Information Sciences Institute, May 1979.][Jon_Postel]
dcn-meas 19 DCN-MEAS # DCN Measurement Subsystems [David_Mills]
hmp 20 HMP # Host Monitoring [RFC869][Bob_Hinden]
prm 21 PRM # Packet Radio Measurement [Zaw_Sing_Su]
# ["The Ethernet, A Local Area Network: Data Link Layer and Physical Layer
# Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, MA.
# Also as: "The Ethernet - A Local Area Network", Version 1.0, Digital
# Equipment Corporation, Intel Corporation, Xerox Corporation, September
xns-idp 22 XNS-IDP # XEROX NS IDP 1980. And: "The Ethernet, A Local Area Network: Data Link Layer and
# Physical Layer Specifications", Digital, Intel and Xerox, November 1982.
# And: XEROX, "The Ethernet, A Local Area Network: Data Link Layer and
# Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford,
# CT., October 1980.][[XEROX]]
trunk-1 23 TRUNK-1 # Trunk-1 [Barry_Boehm]
trunk-2 24 TRUNK-2 # Trunk-2 [Barry_Boehm]
leaf-1 25 LEAF-1 # Leaf-1 [Barry_Boehm]
leaf-2 26 LEAF-2 # Leaf-2 [Barry_Boehm]
rdp 27 RDP # Reliable Data Protocol [RFC908][Bob_Hinden]
irtp 28 IRTP # Internet Reliable [RFC938][Trudy_Miller]
# Transaction
iso-tp4 29 ISO-TP4 # ISO Transport Protocol Class [RFC905][<mystery contact>]
# 4
netblt 30 NETBLT # Bulk Data Transfer Protocol [RFC969][David_Clark]
# MFE Network Services [Shuttleworth, B., "A Documentary of MFENet, a National Computer
mfe-nsp 31 MFE-NSP # Protocol Network", UCRL-52317, Lawrence Livermore Labs, Livermore, California,
# June 1977.][Barry_Howard]
merit-inp 32 MERIT-INP # MERIT Internodal Protocol [Hans_Werner_Braun]
dccp 33 DCCP # Datagram Congestion Control [RFC4340]
# Protocol
3pc 34 3PC # Third Party Connect Protocol [Stuart_A_Friedberg]
idpr 35 IDPR # Inter-Domain Policy Routing [Martha_Steenstrup]
# Protocol
xtp 36 XTP # XTP [Greg_Chesson]
ddp 37 DDP # Datagram Delivery Protocol [Wesley_Craig]
idpr-cmtp 38 IDPR-CMTP # IDPR Control Message [Martha_Steenstrup]
# Transport Proto
tp++ 39 TP++ # TP++ Transport Protocol [Dirk_Fromhein]
il 40 IL # IL Transport Protocol [Dave_Presotto]
ipv6 41 IPv6 # IPv6 encapsulation [RFC2473]
sdrp 42 SDRP # Source Demand Routing [Deborah_Estrin]
# Protocol
ipv6-route 43 IPv6-Route # Routing Header for IPv6 Y [Steve_Deering]
ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6 Y [Steve_Deering]
idrp 45 IDRP # Inter-Domain Routing [Sue_Hares]
# Protocol
rsvp 46 RSVP # Reservation Protocol [RFC2205][RFC3209][Bob_Braden]
gre 47 GRE # Generic Routing [RFC2784][Tony_Li]
# Encapsulation
dsr 48 DSR # Dynamic Source Routing [RFC4728]
# Protocol
bna 49 BNA # BNA [Gary Salamon]
esp 50 ESP # Encap Security Payload Y [RFC4303]
ah 51 AH # Authentication Header Y [RFC4302]
i-nlsp 52 I-NLSP # Integrated Net Layer [K_Robert_Glenn]
# Security TUBA
swipe 53 SWIPE # (deprecated) IP with Encryption [John_Ioannidis]
narp 54 NARP # NBMA Address Resolution [RFC1735]
# Protocol
mobile 55 MOBILE # IP Mobility [Charlie_Perkins]
# Transport Layer Security
tlsp 56 TLSP # Protocol using Kryptonet key [Christer_Oberg]
# management
skip 57 SKIP # SKIP [Tom_Markson]
ipv6-icmp 58 IPv6-ICMP # ICMP for IPv6 [RFC8200]
ipv6-nonxt 59 IPv6-NoNxt # No Next Header for IPv6 [RFC8200]
ipv6-opts 60 IPv6-Opts # Destination Options for IPv6 Y [RFC8200]
# 61 any host internal protocol [Internet_Assigned_Numbers_Authority]
cftp 62 CFTP # CFTP [Forsdick, H., "CFTP", Network Message, Bolt Beranek and Newman, January
# 1982.][Harry_Forsdick]
# 63 any local network [Internet_Assigned_Numbers_Authority]
sat-expak 64 SAT-EXPAK # SATNET and Backroom EXPAK [Steven_Blumenthal]
kryptolan 65 KRYPTOLAN # Kryptolan [Paul Liu]
rvd 66 RVD # MIT Remote Virtual Disk [Michael_Greenwald]
# Protocol
ippc 67 IPPC # Internet Pluribus Packet [Steven_Blumenthal]
# Core
# 68 any distributed file system [Internet_Assigned_Numbers_Authority]
sat-mon 69 SAT-MON # SATNET Monitoring [Steven_Blumenthal]
visa 70 VISA # VISA Protocol [Gene_Tsudik]
ipcv 71 IPCV # Internet Packet Core Utility [Steven_Blumenthal]
cpnx 72 CPNX # Computer Protocol Network [David Mittnacht]
# Executive
cphb 73 CPHB # Computer Protocol Heart Beat [David Mittnacht]
wsn 74 WSN # Wang Span Network [Victor Dafoulas]
pvp 75 PVP # Packet Video Protocol [Steve_Casner]
br-sat-mon 76 BR-SAT-MON # Backroom SATNET Monitoring [Steven_Blumenthal]
sun-nd 77 SUN-ND # SUN ND PROTOCOL-Temporary [William_Melohn]
wb-mon 78 WB-MON # WIDEBAND Monitoring [Steven_Blumenthal]
wb-expak 79 WB-EXPAK # WIDEBAND EXPAK [Steven_Blumenthal]
iso-ip 80 ISO-IP # ISO Internet Protocol [Marshall_T_Rose]
vmtp 81 VMTP # VMTP [Dave_Cheriton]
secure-vmtp 82 SECURE-VMTP # SECURE-VMTP [Dave_Cheriton]
vines 83 VINES # VINES [Brian Horn]
ttp 84 TTP iptm IPTM # Transaction Transport [Jim_Stevens]
# Protocol
#iptm 84 IPTM # Internet Protocol Traffic [Jim_Stevens]
# Manager
nsfnet-igp 85 NSFNET-IGP # NSFNET-IGP [Hans_Werner_Braun]
dgp 86 DGP # Dissimilar Gateway Protocol [M/A-COM Government Systems, "Dissimilar Gateway Protocol Specification,
# Draft Version", Contract no. CS901145, November 16, 1987.][Mike_Little]
tcf 87 TCF # TCF [Guillermo_A_Loyola]
eigrp 88 EIGRP # EIGRP [RFC7868]
ospfigp 89 OSPFIGP # OSPFIGP [RFC1583][RFC2328][RFC5340][John_Moy]
# [Welch, B., "The Sprite Remote Procedure Call System", Technical Report,
sprite-rpc 90 Sprite-RPC # Sprite RPC Protocol UCB/Computer Science Dept., 86/302, University of California at Berkeley,
# June 1986.][Bruce Willins]
larp 91 LARP # Locus Address Resolution [Brian Horn]
# Protocol
mtp 92 MTP # Multicast Transport Protocol [Susie_Armstrong]
ax.25 93 AX.25 # AX.25 Frames [Brian_Kantor]
ipip 94 IPIP # IP-within-IP Encapsulation [John_Ioannidis]
# Protocol
micp 95 MICP # (deprecated) Mobile Internetworking [John_Ioannidis]
# Control Pro.
scc-sp 96 SCC-SP # Semaphore Communications [Howard_Hart]
# Sec. Pro.
etherip 97 ETHERIP # Ethernet-within-IP [RFC3378]
# Encapsulation
encap 98 ENCAP # Encapsulation Header [RFC1241][Robert_Woodburn]
# 99 any private encryption [Internet_Assigned_Numbers_Authority]
# scheme
gmtp 100 GMTP # GMTP [[RXB5]]
ifmp 101 IFMP # Ipsilon Flow Management [Bob_Hinden][November 1995, 1997.]
# Protocol
pnni 102 PNNI # PNNI over IP [Ross_Callon]
pim 103 PIM # Protocol Independent [RFC7761][Dino_Farinacci]
# Multicast
aris 104 ARIS # ARIS [Nancy_Feldman]
scps 105 SCPS # SCPS [Robert_Durst]
qnx 106 QNX # QNX [Michael_Hunter]
a/n 107 A/N # Active Networks [Bob_Braden]
ipcomp 108 IPComp # IP Payload Compression [RFC2393]
# Protocol
snp 109 SNP # Sitara Networks Protocol [Manickam_R_Sridhar]
compaq-peer 110 Compaq-Peer # Compaq Peer Protocol [Victor_Volpe]
ipx-in-ip 111 IPX-in-IP # IPX in IP [CJ_Lee]
vrrp 112 VRRP carp # Virtual Router Redundancy [RFC5798]
# Protocol
pgm 113 PGM # PGM Reliable Transport [Tony_Speakman]
# Protocol
# 114 any 0-hop protocol [Internet_Assigned_Numbers_Authority]
l2tp 115 L2TP # Layer Two Tunneling Protocol [RFC3931][Bernard_Aboba]
ddx 116 DDX # D-II Data Exchange (DDX) [John_Worley]
iatp 117 IATP # Interactive Agent Transfer [John_Murphy]
# Protocol
stp 118 STP # Schedule Transfer Protocol [Jean_Michel_Pittet]
srp 119 SRP # SpectraLink Radio Protocol [Mark_Hamilton]
uti 120 UTI # UTI [Peter_Lothberg]
smp 121 SMP # Simple Message Protocol [Leif_Ekblad]
sm 122 SM # (deprecated) Simple Multicast Protocol [Jon_Crowcroft][draft-perlman-simple-multicast]
ptp 123 PTP # Performance Transparency [Michael_Welzl]
# Protocol
isis 124 ISIS # over IPv4 [Tony_Przygienda]
fire 125 FIRE # [Criag_Partridge]
crtp 126 CRTP # Combat Radio Transport [Robert_Sautter]
# Protocol
crudp 127 CRUDP # Combat Radio User Datagram [Robert_Sautter]
sscopmce 128 SSCOPMCE # [Kurt_Waber]
iplt 129 IPLT # [[Hollbach]]
sps 130 SPS # Secure Packet Shield [Bill_McIntosh]
pipe 131 PIPE # Private IP Encapsulation [Bernhard_Petri]
# within IP
sctp 132 SCTP # Stream Control Transmission [Randall_R_Stewart]
# Protocol
fc 133 FC # Fibre Channel [Murali_Rajagopal][RFC6172]
rsvp-e2e-ignore 134 RSVP-E2E-IGNORE # [RFC3175]
mobility 135 Mobility # Header Y [RFC6275]
udplite 136 UDPLite # [RFC3828]
mpls-in-ip 137 MPLS-in-IP # [RFC4023]
manet 138 MANET # MANET Protocols [RFC5498]
hip 139 HIP # Host Identity Protocol Y [RFC7401]
shim6 140 Shim6 # Shim6 Protocol Y [RFC5533]
wesp 141 WESP # Wrapped Encapsulating [RFC5840]
# Security Payload
rohc 142 ROHC # Robust Header Compression [RFC5858]
ethernet 143 Ethernet # Ethernet [RFC8986]
aggfrag 144 AGGFRAG # AGGFRAG encapsulation [RFC-ietf-ipsecme-iptfs-19]
# payload for ESP
# 145-252 Unassigned [Internet_Assigned_Numbers_Authority]
pfsync 240 PFSYNC # PF Synchronization
# 253 Use for experimentation and Y [RFC3692]
# testing
# 254 Use for experimentation and Y [RFC3692]
# testing
reserved 255 Reserved # [Internet_Assigned_Numbers_Authority]
#
# Contact Information
#
# ID Name Contact URI Last Updated
# [Barry_Boehm] Barry Boehm mailto:boehm&arpa.mil
# [Barry_Howard] Barry Howard mailto:Howard&nmfecc.llnl.gov
# [Bernard_Aboba] Bernard Aboba mailto:bernardaµsoft.com 1998-04
# [Bernhard_Petri] Bernhard Petri mailto:bernhard.petri&siemens.com 2012-07-09
# [Bill_McIntosh] Bill McIntosh mailto:BMcIntosh&fortresstech.com
# [Bob_Braden] Bob Braden mailto:braden&isi.edu 1997-07
# [Bob_Hinden] Bob Hinden mailto:bob.hinden&gmail.com 2013-02-17
# [Brian_Kantor] Brian Kantor mailto:brian&ucsd.edu
# [CJ_Lee] CJ Lee mailto:cj_lee&novell.com 1997-10
# [Charlie_Perkins] Charlie Perkins mailto:perk&watson.ibm.com 1994-10
# [Christer_Oberg] Christer Oberg mailto:chg&bull.se 1994-10
# [Criag_Partridge] Criag Partridge mailto:craig&bbn.com 1999-08
# [Dave_Cheriton] Dave Cheriton mailto:cheriton&pescadero.stanford.edu
# [Dave_Presotto] Dave Presotto mailto:presotto&plan9.att.com 1995-07
# [David_Clark] David Clark mailto:ddc&lcs.mit.edu
# [David_Mills] David Mills mailto:Mills&huey.udel.edu
# [Deborah_Estrin] Deborah Estrin mailto:estrin&usc.edu
# [Dino_Farinacci] Dino Farinacci mailto:dino&cisco.com 1996-03
# [Dirk_Fromhein] Dirk Fromhein mailto:df&watershed.com
# [Gene_Tsudik] Gene Tsudik mailto:tsudik&usc.edu
# [Greg_Chesson] Greg Chesson mailto:Greg&sgi.com
# [Guillermo_A_Loyola] Guillermo A. Loyola mailto:LOYOLA&ibm.com
# [Hans_Werner_Braun] Hans-Werner Braun mailto:HWB&mcr.umich.edu
# [Harry_Forsdick] Harry Forsdick mailto:Forsdick&bbn.com
# [Howard_Hart] Howard Hart mailto:hch&hybrid.com
# [Internet_Assigned_Numbers_Authority] Internet Assigned Numbers Authority mailto:iana&iana.org 1995-06
# [J_Noel_Chiappa] J. Noel Chiappa mailto:JNC&xx.lcs.mit.edu
# [Jack_Haverty] Jack Haverty mailto:jhaverty&oracle.com
# [Jean_Michel_Pittet] Jean-Michel Pittet mailto:jmp&gandalf.engr.sgi.com 1998-11
# [Jim_Stevens] Jim Stevens mailto:jasteven&rockwellcollins.com 2011-01-26
# [John_Ioannidis] John Ioannidis mailto:ji&tla.org 2015-01-06
# [John_Moy] John Moy mailto:jmoy&proteon.com
# [John_Murphy] John Murphy mailto:john.m.murphy&mci.com 1998-10
# [John_Worley] John Worley mailto:worley&milehigh.net 1998-06
# [Jon_Crowcroft] Jon Crowcroft mailto:jon&cs.ucl.ac.uk 1999-06
# [Jon_Postel] Jon Postel mailto:postel&isi.edu
# [K_Robert_Glenn] K. Robert Glenn mailto:glenn&osi.ncsl.nist.gov
# [Kurt_Waber] Kurt Waber mailto:kurt.waber&swisscom.com 1999-08
# [Leif_Ekblad] Leif Ekblad mailto:leif&rdos.net 2012-08-21
# [Manickam_R_Sridhar] Manickam R. Sridhar mailto:msridhar&sitaranetworks.com 1997-09
# [Mark_Hamilton] Mark Hamilton mailto:mah&spectralink.com 1998-11
# [Marshall_T_Rose] Marshall T. Rose mailto:mrose&dbc.mtview.ca.us
# [Martha_Steenstrup] Martha Steenstrup mailto:MSteenst&bbn.com
# [Michael_Greenwald] Michael Greenwald mailto:Greenwald&scrc-stony-brook.symbolics.com
# [Michael_Hunter] Michael Hunter mailto:mphunter&qnx.com 1997-07
# [Michael_Welzl] Michael Welzl mailto:michael&tk.uni-linz.ac.at 1999-08
# [Mike_Little] Mike Little mailto:little&macom4.arpa
# [Murali_Rajagopal] Murali Rajagopal mailto:murali&gadzoox.com 2000-05
# [Nancy_Feldman] Nancy Feldman mailto:nkf&vnet.ibm.com 1997-01
# [Peter_Lothberg] Peter Lothberg mailto:roll&stupi.se 1999-03
# [Randall_R_Stewart] Randall R. Stewart mailto:rrs&lakerest.net 2000-04
# [Robert_Durst] Robert Durst mailto:durst&mitre.org 1997-03
# [Robert_Sautter] Robert Sautter mailto:rsautter&acdnj.itt.com 1999-08
# [Robert_W_Scheifler] Robert W. Scheifler mailto:rscheifler&comcast.net 2015-10-06
# [Robert_Woodburn] Robert Woodburn mailto:woody&cseic.saic.com
# [Ross_Callon] Ross Callon mailto:rcallon&baynetworks.com 1995-12
# [Steve_Casner] Steve Casner mailto:casner&isi.edu
# [Steve_Chipman] Steve Chipman mailto:Chipman&f.bbn.com
# [Steve_Deering] Steve Deering mailto:deering&parc.xerox.com 1995-03
# [Steven_Blumenthal] Steven Blumenthal mailto:BLUMENTHAL&vax.bbn.com
# [Stuart_A_Friedberg] Stuart A. Friedberg mailto:stuart&cs.wisc.edu
# [Sue_Hares] Sue Hares mailto:skh&merit.edu
# [Susie_Armstrong] Susie Armstrong mailto:Armstrong.wbst128&xerox.com
# [Tom_Markson] Tom Markson mailto:markson&osmosys.ingog.com 1995-09
# [Tony_Ballardie] Tony Ballardie mailto:A.Ballardie&cs.ucl.ac.uk
# [Tony_Li] Tony Li mailto:tony.li&tony.li 2012-10-17
# [Tony_Przygienda] Tony Przygienda mailto:prz&siara.com 1999-08
# [Tony_Speakman] Tony Speakman mailto:speakman&cisco.com 1998-01
# [Trudy_Miller] Trudy Miller mailto:Trudy&acc.com
# [Victor_Volpe] Victor Volpe mailto:vvolpe&smtp.microcom.com 1997-10
# [Wesley_Craig] Wesley Craig mailto:Wesley.Craig&terminator.cc.umich.edu
# [William_Melohn] William Melohn mailto:Melohn&sun.com
# [Zaw_Sing_Su] Zaw-Sing Su mailto:ZSu&tsca.istc.sri.
#
# Licensing Terms