# Internet (IP) protocols
#
# Updated from http://www.iana.org/assignments/protocol-numbers and other
# sources.
# New protocols will be added on request if they have been officially
# assigned by IANA and are not historical.
# If you need a huge list of used numbers please install the nmap package.

ip               0    IP               # internet protocol, pseudo protocol number
hopopt           0    HOPOPT           # IPv6 Hop-by-Hop Option [RFC1883]
icmp             1    ICMP             # internet control message protocol
igmp             2    IGMP             # Internet Group Management
ggp              3    GGP              # gateway-gateway protocol
ipencap          4    IP-ENCAP         # IP encapsulated in IP (officially 'IP')
st               5    ST               # ST datagram mode
tcp              6    TCP              # transmission control protocol
egp              8    EGP              # exterior gateway protocol
igp              9    IGP              # any private interior gateway (Cisco)
pup              12   PUP              # PARC universal packet protocol
udp              17   UDP              # user datagram protocol
hmp              20   HMP              # host monitoring protocol
xns-idp          22   XNS-IDP          # Xerox NS IDP
rdp              27   RDP              # "reliable datagram" protocol
iso-tp4          29   ISO-TP4          # ISO Transport Protocol class 4 [RFC905]
dccp             33   DCCP             # Datagram Congestion Control Prot. [RFC4340]
xtp              36   XTP              # Xpress Transfer Protocol
ddp              37   DDP              # Datagram Delivery Protocol
idpr-cmtp        38   IDPR-CMTP        # IDPR Control Message Transport
ipv6             41   IPv6             # Internet Protocol, version 6
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              # General Routing Encapsulation
esp              50   IPSEC-ESP        # Encap Security Payload [RFC2406]
ah               51   IPSEC-AH         # Authentication Header [RFC2402]
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
rspf             73   RSPF CPHB        # Radio Shortest Path First (officially CPHB)
vmtp             81   VMTP             # Versatile Message Transport
eigrp            88   EIGRP            # Enhanced Interior Routing Protocol (Cisco)
ospf             89   OSPFIGP          # Open Shortest Path First IGP
ax.25            93   AX.25            # AX.25 frames
ipip             94   IPIP             # IP-within-IP Encapsulation Protocol
etherip          97   ETHERIP          # Ethernet-within-IP Encapsulation [RFC3378]
encap            98   ENCAP            # Yet Another IP encapsulation [RFC1241]
#                99                    # any private encryption scheme
pim              103  PIM              # Protocol Independent Multicast
ipcomp           108  IPCOMP           # IP Payload Compression Protocol
vrrp             112  VRRP             # Virtual Router Redundancy Protocol [RFC5798]
l2tp             115  L2TP             # Layer Two Tunneling Protocol [RFC2661]
isis             124  ISIS             # IS-IS over IPv4
sctp             132  SCTP             # Stream Control Transmission Protocol
fc               133  FC               # Fibre Channel
mobility-header  135  Mobility-Header  # Mobility Support for IPv6 [RFC3775]
udplite          136  UDPLite          # UDP-Lite [RFC3828]
mpls-in-ip       137  MPLS-in-IP       # MPLS-in-IP [RFC4023]
manet            138                   # MANET Protocols [RFC5498]
hip              139  HIP              # Host Identity Protocol
shim6            140  Shim6            # Shim6 Protocol [RFC5533]
wesp             141  WESP             # Wrapped Encapsulating Security Payload
rohc             142  ROHC             # Robust Header Compression
ethernet         143  Ethernet         # Ethernet encapsulation for SRv6 [RFC8986]
mptcp            262  MPTCP            # Multipath TCP connection
