Sarah Tarrant <[email protected]> wrote: > Michael - It's up to you all if you want to complete the EDIT and > AUTH48 states in Markdown or XML. If you do want to go with Markdown, > just send along the self-contained file.
Let's do markdown then.
--- stand_alone: true ipr: trust200902 docname: draft-ietf-opsawg-pcaplinktype-latest cat: info stream: IETF pi: symrefs: 'yes' toc: 'yes' compact: 'yes' subcompact: 'no' inline: 'yes' sortrefs: 'no' strict: 'yes' title: Link-Layer Types for PCAP-related Capture File Formats abbrev: pcaplinktype author: - role: editor ins: G. Harris name: Guy Harris org: '' email: [email protected] - ins: M. Richardson name: Michael C. Richardson org: Sandelman Software Works Inc abbrev: Sandelman email: [email protected] uri: http://www.sandelman.ca/ venue: group: opsawg mail: [email protected] github: IETF-OPSAWG-WG/pcapng normative: informative: LINKTYPES: title: LINK-LAYER HEADER TYPES date: false target: https://www.tcpdump.org/linktypes.html LIBPCAP: title: PCAP Library date: false target: https://www.tcpdump.org/#libpcap Wireshark: title: Homepage of Wireshark date: false target: https://www.wireshark.org 3GPP-TS-04.64: title: > Digital cellular telecommunications system (Phase 2+); General Packet Radio Service (GPRS); Mobile Station - Serving GPRS Support Node (MS-SGSN) Logical Link Control (LLC) layer specification date: false refcontent: 3GPP TS 04.64 AIM-628: author: - fullname: David A. Moon org: MIT Artificial Intelligence Laboratory title: Chaosnet date: June 1981 refcontent: MIT A.I. Memo No. 628 target: http://www.bitsavers.org/pdf/mit/ai/AIM-628_chaosnet.pdf Auerswald-Logger: title: Packet structure target: https://github.com/Auerswald-GmbH/auerlog/blob/master/auerlog.txt AVS: author: fullname: Solomon Peachy title: AVS Capture Frame Format Version 2 date: false target: http://web.archive.org/web/20040803232023/http://www.shaftnet.org/~pizza/software/capturefrm.txt DOCSIS-4.0-MULP: title: DOCSIS 4.0 MAC and Upper Layer Protocols Interface Specification date: false target: https://www.cablelabs.com/specifications/CM-SP-MULPIv4.0 DOCSIS-XRA: title: Excentis XRA Header Definition date: false target: https://support.excentis.com/knowledge/article/45 DVB-CI-PCAP: title: PCAP format for DVB-CI author: - fullname: Martin Kaiser ins: M. Kaiser org: "" date: January 2, 2021 target: https://www.kaiser.cx/posts/pcap-dvbci/ EBHSCR: title: Documentation EBHSCR date: false target: http://www.elektrobit.com/ebhscr Exegin-802.15.4-TAP: title: IEEE 802.15.4 TAP Link Type Specification date: false target: https://gitlab.com/exegin/ieee802-15-4-tap FD.io-VPP: title: VNET (VPP Network Stack) date: false target: https://fdio-vpp.readthedocs.io/en/latest/gettingstarted/developers/vnet.html G.7041: title: > Generic Framing Procedure date: false refcontent: ITU-T Recommendation G.7041/Y.1303 target: https://www.itu.int/rec/T-REC-G.7041/en ISO-14443-PCAP: title: PCAP format for ISO14443 author: - fullname: Martin Kaiser ins: M. Kaiser org: "" date: January 2, 2021 target: https://www.kaiser.cx/posts/pcap-iso14443/ LINKTYPE_APPLE_IP_OVER_IEEE1394: title: LINKTYPE_APPLE_IP_OVER_IEEE1394 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_APPLE_IP_OVER_IEEE1394.html LINKTYPE_ATM_RFC1483: title: LINKTYPE_ATM_RFC1483 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ATM_RFC1483.html LINKTYPE_ATSC_ALP: title: LINKTYPE_ATSC_ALP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ATSC_ALP.html LINKTYPE_AX25: title: LINKTYPE_AX25 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_AX25.html LINKTYPE_AX25_KISS: title: LINKTYPE_AX25_KISS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_AX25_KISS.html LINKTYPE_BACNET_MS_TP: title: LINKTYPE_BACNET_MS_TP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BACNET_MS_TP.html LINKTYPE_BLUETOOTH_BREDR_BB: title: LINKTYPE_BLUETOOTH_BREDR_BB date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BLUETOOTH_BREDR_BB.html LINKTYPE_BLUETOOTH_HCI_H4: title: LINKTYPE_BLUETOOTH_HCI_H4 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BLUETOOTH_HCI_H4.html LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR: title: LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR.html LINKTYPE_BLUETOOTH_LE_LL: title: LINKTYPE_BLUETOOTH_LE_LL date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BLUETOOTH_LE_LL.html LINKTYPE_BLUETOOTH_LE_LL_WITH_PHDR: title: LINKTYPE_BLUETOOTH_LE_LL_WITH_PHDR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BLUETOOTH_LE_LL_WITH_PHDR.html LINKTYPE_BLUETOOTH_LINUX_MONITOR: title: LINKTYPE_BLUETOOTH_LINUX_MONITOR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_BLUETOOTH_LINUX_MONITOR.html LINKTYPE_C_HDLC: title: LINKTYPE_C_HDLC date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_C_HDLC.html LINKTYPE_C_HDLC_WITH_DIR: title: LINKTYPE_C_HDLC_WITH_DIR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_C_HDLC_WITH_DIR.html LINKTYPE_CAN_SOCKETCAN: title: LINKTYPE_CAN_SOCKETCAN date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_CAN_SOCKETCAN.html LINKTYPE_DBUS: title: LINKTYPE_DBUS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DBUS.html LINKTYPE_DECT_NR: title: LINKTYPE_DECT_NR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DECT_NR.html LINKTYPE_DISPLAYPORT_AUX: title: LINKTYPE_DISPLAYPORT_AUX date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DISPLAYPORT_AUX.html LINKTYPE_DSA_TAG_BRCM: title: LINKTYPE_DSA_TAG_BRCM date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DSA_TAG_BRCM.html LINKTYPE_DSA_TAG_BRCM_PREPEND: title: LINKTYPE_DSA_TAG_BRCM_PREPEND date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DSA_TAG_BRCM_PREPEND.html LINKTYPE_DSA_TAG_DSA: title: LINKTYPE_DSA_TAG_DSA date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DSA_TAG_DSA.html LINKTYPE_DSA_TAG_EDSA: title: LINKTYPE_DSA_TAG_EDSA date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_DSA_TAG_EDSA.html LINKTYPE_ETHERNET: title: IEEE 802.3 Ethernet date: false target: https://ieeexplore.ieee.org/document/9844436 LINKTYPE_EPON: title: LINKTYPE_EPON date: fals target: https://www.tcpdump.org/linktypes/LINKTYPE_EPON.html LINKTYPE_ERF: title: LINKTYPE_ERF date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ERF.html LINKTYPE_ETW: title: LINKTYPE_ETW date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ETW.html LINKTYPE_ETHERNET_MPACKET: title: LINKTYPE_ETHERNET_MPACKET date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ETHERNET_MPACKET.html LINKTYPE_FC_2: title: LINKTYPE_FC_2 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_FC_2.html LINKTYPE_FC_2_WITH_FRAME_DELIMS: title: LINKTYPE_FC_2_WITH_FRAME_DELIMS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_FC_2_WITH_FRAME_DELIMSa.html LINKTYPE_FIRA_UCI: title: LINKTYPE_FIRA_UCI date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_FIRA_UCI.html LINKTYPE_FLEXRAY: title: LINKTYPE_FLEXRAY date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_FLEXRAY.html LINKTYPE_FRELAY: title: LINKTYPE_FRELAY date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_FRELAY.html LINKTYPE_FRELAY_WITH_DIR: title: LINKTYPE_FRELAY_WITH_DIR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_FRELAY_WITH_DIR.html LINKTYPE_I2C_LINUX: title: LINKTYPE_I2C_LINUX date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_I2C_LINUX.html LINKTYPE_IEEE802_11_PRISM: title: LINKTYPE_IEEE802_11_PRISM date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IEEE802_11_PRISM.html LINKTYPE_IEEE802_15_4_NOFCS: title: LINKTYPE_IEEE802_15_4_NOFCS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IEEE802_15_4_NOFCS.html LINKTYPE_IEEE802_15_4_NONASK_PHY: title: LINKTYPE_IEEE802_15_4_NONASK_PHY date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IEEE802_15_4_NONASK_PHY.html LINKTYPE_IEEE802_15_4_WITHFCS: title: LINKTYPE_IEEE802_15_4_WITHFCS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IEEE802_15_4_WITHFCS.html LINKTYPE_IPV4: title: LINKTYPE_IPV4 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IPV4.html LINKTYPE_IPV6: title: LINKTYPE_IPV6 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IPV6.html LINKTYPE_IPOIB: title: LINKTYPE_IPOIB date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IPOIB.html LINKTYPE_IP_OVER_FC: title: LINKTYPE_IP_OVER_FC date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IP_OVER_FC.html LINKTYPE_INFINIBAND: title: LINKTYPE_INFINIBAND date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_INFINIBAND.html LINKTYPE_IPMI_HPM_2: title: LINKTYPE_IPMI_HPM_2 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IPMI_HPM_2.html LINKTYPE_IPNET: title: LINKTYPE_IPNET date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_IPNET.html LINKTYPE_LAPB_WITH_DIR: title: LINKTYPE_LAPB_WITH_DIR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LAPB_WITH_DIR.html LINKTYPE_LAPD: title: LINKTYPE_LAPD date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LAPD.html LINKTYPE_LIN: title: LINKTYPE_LIN date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LIN.html LINKTYPE_LINUX_IRDA: title: LINKTYPE_LINUX_IRDA date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LINUX_IRDA.html LINKTYPE_LINUX_LAPD: title: LINKTYPE_LINUX_LAPD date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LINUX_LAPD.html LINKTYPE_LINUX_SLL: title: LINKTYPE_LINUX_SLL date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LINUX_SLL.html LINKTYPE_LINUX_SLL2: title: LINKTYPE_LINUX_SLL2 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LINUX_SLL2.html LINKTYPE_LOOP: title: LINKTYPE_LOOP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LOOP.html LINKTYPE_LORATAP: title: LINKTYPE_LORATAP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LORATAP.html LINKTYPE_LTALK: title: LINKTYPE_LTALK date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_LTALK.html LINKTYPE_MFR: title: LINKTYPE_MFR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_MFR.html LINKTYPE_MPEG_2_TS: title: LINKTYPE_MPEG_2_TS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_MPEG_2_TS.html LINKTYPE_MTP2: title: LINKTYPE_MTP2 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_MTP2.html LINKTYPE_MTP2_WITH_PHDR: title: LINKTYPE_MTP2_WITH_PHDR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_MTP2_WITH_PHDR.html LINKTYPE_MTP3: title: LINKTYPE_MTP3 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_MTP3.html LINKTYPE_SCCP: title: LINKTYPE_SCCP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_SCCP.html LINKTYPE_MUX27010: title: LINKTYPE_MUX27010 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_MUX27010.html LINKTYPE_NETANALYZER: title: LINKTYPE_NETANALYZER date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NETANALYZER.html LINKTYPE_NETANALYZER_TRANSPARENT: title: LINKTYPE_NETANALYZER_TRANSPARENT date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NETANALYZER_TRANSPARENT.html LINKTYPE_NETLINK: title: LINKTYPE_NETLINK date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NETLINK.html LINKTYPE_NFC_LLCP: title: LINKTYPE_NFC_LLCP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NFC_LLCP.html LINKTYPE_NFLOG: title: LINKTYPE_NFLOG date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NFLOG.html LINKTYPE_NG40: title: LINKTYPE_NG40 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NG40.html LINKTYPE_NORDIC_BLE: title: LINKTYPE_NORDIC_BLE date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NORDIC_BLE.html LINKTYPE_NULL: title: LINKTYPE_NULL date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_NULL.html LINKTYPE_PKTAP: title: LINKTYPE_PKTAP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PKTAP.html LINKTYPE_PPI: title: LINKTYPE_PPI date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PPI.html LINKTYPE_PPP: title: LINKTYPE_PPP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PPP.html LINKTYPE_PPP_ETHER: title: LINKTYPE_PPP_ETHER date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PPP_ETHER.html LINKTYPE_PPP_HDLC: title: LINKTYPE_PPP_HDLC date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PPP_HDLC.html LINKTYPE_PPP_PPPD: title: LINKTYPE_PPP_PPPD date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PPP_PPPD.html LINKTYPE_PPP_WITH_DIR: title: LINKTYPE_PPP_WITH_DIR date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PPP_WITH_DIR.html LINKTYPE_PROFIBUS_DL: title: LINKTYPE_PROFIBUS_DL date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_PROFIBUS_DL.html LINKTYPE_RAW: title: LINKTYPE_RAW date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_RAW.html LINKTYPE_RDS: title: LINKTYPE_RDS date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_RDS.html LINKTYPE_RTAC_SERIAL: title: LINKTYPE_RTAC_SERIAL date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_RTAC_SERIAL.html LINKTYPE_SDLC: title: LINKTYPE_SDLC date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_SDLC.html LINKTYPE_SITA: title: LINKTYPE_SITA date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_SITA.html LINKTYPE_SLIP: title: LINKTYPE_SLIP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_SLIP.html LINKTYPE_STANAG_5066_D_PDU: title: LINKTYPE_STANAG_5066_D_PDU date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_STANAG_5066_D_PDU.html LINKTYPE_SUNATM: title: LINKTYPE_SUNATM date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_SUNATM.html LINKTYPE_USB_2_0: title: LINKTYPE_USB_2_0 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_2_0.html LINKTYPE_USB_2_0_FULL_SPEED: title: LINKTYPE_USB_2_0_FULL_SPEED date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_2_0_FULL_SPEED.html LINKTYPE_USB_2_0_HIGH_SPEED: title: LINKTYPE_USB_2_0_HIGH_SPEED date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_2_0_HIGH_SPEED.html LINKTYPE_USB_2_0_LOW_SPEED: title: LINKTYPE_USB_2_0_LOW_SPEED date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_2_0_LOW_SPEED.html LINKTYPE_USB_DARWIN: title: LINKTYPE_USB_DARWIN date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_DARWIN.html LINKTYPE_USB_LINUX: title: LINKTYPE_USB_LINUX date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_LINUX.html LINKTYPE_USB_LINUX_MMAPPED: title: LINKTYPE_USB_LINUX_MMAPPED date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_USB_LINUX_MMAPPED.html LINKTYPE_VSOCK: title: LINKTYPE_VSOCK date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_VSOCK.html LINKTYPE_WATTSTOPPER_DLM: title: LINKTYPE_WATTSTOPPER_DLM date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_WATTSTOPPER_DLM.html LINKTYPE_ZBOSS_NCP: title: LINKTYPE_ZBOSS_NCP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ZBOSS_NCP.html LINKTYPE_ZWAVE_R1_R2: title: LINKTYPE_ZWAVE_R1_R2 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ZWAVE_R1_R2.html LINKTYPE_ZWAVE_R3: title: LINKTYPE_ZWAVE_R3 date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ZWAVE_R3.html LINKTYPE_ZWAVE_TAP: title: LINKTYPE_ZWAVE_TAP date: false target: https://www.tcpdump.org/linktypes/LINKTYPE_ZWAVE_TAP.html MDB-PCAP: title: PCAP format for MDB author: - fullname: Martin Kaiser ins: M. Kaiser org: "" date: August 7, 2023 target: https://www.kaiser.cx/posts/pcap-mdb/ OpenVizsla: title: OpenVizsla protocol description date: August 22, 2018 target: https://github.com/matwey/libopenvizsla/wiki/OpenVizsla-protocol-description PracConsEthDesign: title: Practical Considerations in Ethernet Local Network Design date: February 1980 author: - fullname: Ronald C. Crane org: Xerox Palo Alto Research Center - fullname: Edward A. Taft org: Xerox Palo Alto Research Center target: http://bitsavers.org/pdf/xerox/ethernet_3mb/Practical_Considerations_in_Ethernet_Local_Network_Design_Feb1980.pdf Radiotap: author: org: radiotap.org title: Radiotap Web site date: false target: https://www.radiotap.org Silabs-Debug-Channel: title: Silabs Debug Channel Format target: https://github.com/SiliconLabs/java_packet_trace_library/blob/master/doc/debug-channel.md USBPcap: title: USBPcap Capture format specification date: false target: https://desowin.org/usbpcap/captureformat.html Z-WAVE-SERIAL: title: Z-Wave Serial API Host Application Programming Guide date: false target: https://www.silabs.com/documents/public/user-guides/INS12350-Serial-API-Host-Appl.-Prg.-Guide.pdf --- abstract This document describes a set of Packet CAPture (PCAP)-related LinkType values and creates an IANA registry for those values. These values are used by the PCAP and PCAP-Now-Generic specifications. --- middle # Introduction In the late 1980s, Van Jacobson, Steve McCanne, and others at the Network Research Group at Lawrence Berkeley National Laboratory developed the tcpdump program to capture and dissect network traces. The code to capture traffic, using low-level mechanisms in various operating systems, and to read and write network traces to a file was later put into a library named libpcap {{LIBPCAP}}. Other documents describe the original (legacy) file format used by tcpdump (PCAP, {{?I-D.ietf-opsawg-pcap}}), as well as a revised file format {{?I-D.ietf-opsawg-pcapng}}, both of which are used by tcpdump and Wireshark {{Wireshark}}. Within those file formats each packet that is captured is indicated by a LinkType value. The LinkType value selects one of many hundred formats for metadata and Layer 2 encapsulation of the packet. This document creates an IANA registry for LinkType values, establishing the IANA Considerations by which other uses of the PCAP-related formats may register new LinkType values. # IANA Considerations ## PCAP Registry {#pcapreg} IANA is requested to create a new registry group entitled "The PCAP Registry". ## LinkType Registry {#linktype} IANA is also requested to create a registry entitled "PCAP-related LinkType List" under The PCAP registry group ({{pcapreg}}). The registry has the following structure: * LinkType Value: Indicates the 16-bit unsigned integer assigned for this LinkType. * LinkType Name: Indicates the symbolic name for this LinkType. The name is prefixed with "LINKTYPE\_" (i.e., LINKTYPE\_something). * Change Controller: as per {{RFC8126, Section 2.3}} * Description: Provides a very short description. * Reference: Indicates an authoritative document reference for the LinkType or a requester reference. The policy allocation for the LinkType values is as follows: * Values from 0 to 65000 are allocated following an Expert Review policy (Section 4.5 of [RFC8126]). Values in the ranges 0-10, 50-51, and 98-301 are already assigned; values in the ranges 11-49 and 52-97 are reserved and must not be assigned. * Values from 65001 to 65535 are reserved for Experimental Use ({{Section 4.2 of !RFC8126}}). The initial version of the registry is provided in {{sec-initial}}. The initial contents of the table are based upon the link-layer header type list maintained by libpcap, and published on {{LINKTYPES}}. The change controller for all initial entries that have no other reference is [email protected]. LinkType values 147 to 162 named LINKTYPE\_RESERVED\_xx were originally reserved for Experimental/Private Use, and that use continues to be supported. However, new private use cases should use the values in the 65001-65535 range. In general, Experimental Use values should never leak out of the entity that uses it. As the Expert Review range is large and easily obtained, official values are recommended. > There is often an associated Data Link Type (DLT) value which is often > identical in value, but not universally so. DLT values are associated > with specific operating systems, and the numerical values for some of > them are operating system specific, and are thus not subject to > standardization. ### Initial Values {#sec-initial} This is the initial table for the registry: LinkType Value : 0 LinkType Name : LINKTYPE\_NULL Description : BSD loopback encapsulation Reference : {{LINKTYPE_NULL}} {: spacing="compact"} LinkType Value : 1 LinkType Name : LINKTYPE\_ETHERNET Description : IEEE 802.3 Ethernet Reference : {{LINKTYPE_ETHERNET}} {: spacing="compact"} LinkType Value : 2 LinkType Name : LINKTYPE\_EXP\_ETHERNET Description : Xerox experimental 3Mb Ethernet Reference : {{PracConsEthDesign}} {: spacing="compact"} LinkType Value : 3 LinkType Name : LINKTYPE\_AX25 Description : AX.25 layer 2 packets Reference : {{LINKTYPE_AX25}} {: spacing="compact"} LinkType Value : 4 LinkType Name : LINKTYPE\_PRONET Description : Proteon PRONet Token Ring {: spacing="compact"} LinkType Value : 5 LinkType Name : LINKTYPE\_CHAOS Description : MIT Chaosnet Reference : {{AIM-628}} {: spacing="compact"} LinkType Value : 6 LinkType Name : LINKTYPE\_IEEE802\_5 Description : IEEE 802.5 Token Ring {: spacing="compact"} LinkType Value : 7 LinkType Name : LINKTYPE\_ARCNET\_BSD Description : ARCNET Data Packets with BSD encapsulation {: spacing="compact"} LinkType Value : 8 LinkType Name : LINKTYPE\_SLIP Description : SLIP, with a direction header Reference : {{LINKTYPE_SLIP}} {: spacing="compact"} LinkType Value : 9 LinkType Name : LINKTYPE\_PPP Description : PPP Reference : {{LINKTYPE_PPP}} {: spacing="compact"} LinkType Value : 10 LinkType Name : LINKTYPE\_FDDI Description : FDDI: per ANSI INCITS 239-1994 {: spacing="compact"} LinkType Value : 11-49 LinkType Name : Not available for assignment Description : Do not use these values {: spacing="compact"} LinkType Value : 50 LinkType Name : LINKTYPE\_PPP\_HDLC Description : PPP in HDLC-like framing Reference : {{LINKTYPE_PPP_HDLC}} {: spacing="compact"} LinkType Value : 51 LinkType Name : LINKTYPE\_PPP\_ETHER Description : PPPoE session packets Reference : {{LINKTYPE_PPP_ETHER}} {: spacing="compact"} LinkType Value : 52-98 LinkType Name : Not available for assignment Description : Used historically by NetBSD {: spacing="compact"} LinkType Value : 99 LinkType Name : LINKTYPE\_SYMANTEC\_FIREWALL Description : Symantec Enterprise Firewall {: spacing="compact"} LinkType Value : 100 LinkType Name : LINKTYPE\_ATM\_RFC1483 Description : LLC/SNAP-encapsulated ATM Reference : {{LINKTYPE_ATM_RFC1483}} {: spacing="compact"} LinkType Value : 101 LinkType Name : LINKTYPE\_RAW Description : IP without link-layer headers Reference : {{LINKTYPE_RAW}} {{?RFC791}} {{?RFC8200}} {: spacing="compact"} LinkType Value : 102 LinkType Name : LINKTYPE\_SLIP\_BSDOS Description : BSD/OS SLIP BPF header {: spacing="compact"} LinkType Value : 103 LinkType Name : LINKTYPE\_PPP\_BSDOS Description : BSD/OS PPP BPF header {: spacing="compact"} LinkType Value : 104 LinkType Name : LINKTYPE\_C\_HDLC Description : Cisco PPP with HDLC framing Reference : {{LINKTYPE_C_HDLC}} {: spacing="compact"} LinkType Value : 105 LinkType Name : LINKTYPE\_IEEE802\_11 Description : IEEE 802.11 wireless LAN {: spacing="compact"} LinkType Value : 106 LinkType Name : LINKTYPE\_ATM\_CLIP Description : ATM Classical IP, with no header preceding IP {: spacing="compact"} LinkType Value : 107 LinkType Name : LINKTYPE\_FRELAY Description : Frame Relay LAPF Reference : {{LINKTYPE_FRELAY}} {: spacing="compact"} LinkType Value : 108 LinkType Name : LINKTYPE\_LOOP Description : OpenBSD loopback encapsulation Reference : {{LINKTYPE_LOOP}} {: spacing="compact"} LinkType Value : 109 LinkType Name : LINKTYPE\_ENC Description : OpenBSD IPsec encapsulation {: spacing="compact"} LinkType Value : 110 LinkType Name : LINKTYPE\_LANE8023 Description : ATM LANE + 802.3 {: spacing="compact"} LinkType Value : 111 LinkType Name : LINKTYPE\_HIPPI Description : NetBSD HIPPI {: spacing="compact"} LinkType Value : 112 LinkType Name : LINKTYPE\_HDLC Description : NetBSD HDLC framing {: spacing="compact"} LinkType Value : 113 LinkType Name : LINKTYPE\_LINUX\_SLL Description : Linux "cooked" capture encapsulation Reference : {{LINKTYPE_LINUX_SLL}} {: spacing="compact"} LinkType Value : 114 LinkType Name : LINKTYPE\_LTALK Description : Apple LocalTalk Reference : {{LINKTYPE_LTALK}} {: spacing="compact"} LinkType Value : 115 LinkType Name : LINKTYPE\_ECONET Description : Acorn Econet {: spacing="compact"} LinkType Value : 116 LinkType Name : LINKTYPE\_IPFILTER Description : OpenBSD ipfilter {: spacing="compact"} LinkType Value : 117 LinkType Name : LINKTYPE\_PFLOG Description : PF packet filter logging {: spacing="compact"} LinkType Value : 118 LinkType Name : LINKTYPE\_CISCO\_IOS Description : Cisco-internal use {: spacing="compact"} LinkType Value : 119 LinkType Name : LINKTYPE\_IEEE802\_11\_PRISM Description : IEEE 802.11 wireless LAN, preceded by a Prism monitor mode header Reference : {{LINKTYPE_IEEE802_11_PRISM}} {: spacing="compact"} LinkType Value : 120 LinkType Name : LINKTYPE\_IEEE802\_11\_AIRONET Description : 802.11 + FreeBSD Aironet radio metadata {: spacing="compact"} LinkType Value : 121 LinkType Name : LINKTYPE\_HHDLC Description : Siemens HiPath HDLC {: spacing="compact"} LinkType Value : 122 LinkType Name : LINKTYPE\_IP\_OVER\_FC Description : IP and ATM over Fibre Channel Reference : {{LINKTYPE_IP_OVER_FC}} {: spacing="compact"} LinkType Value : 123 LinkType Name : LINKTYPE\_SUNATM Description : ATM traffic captured from a SunATM device Reference : {{LINKTYPE_SUNATM}} {: spacing="compact"} LinkType Value : 124 LinkType Name : LINKTYPE\_RIO Description : RapidIO {: spacing="compact"} LinkType Value : 125 LinkType Name : LINKTYPE\_PCI\_EXP Description : PCI Express {: spacing="compact"} LinkType Value : 126 LinkType Name : LINKTYPE\_AURORA Description : Xilinx Aurora link layer {: spacing="compact"} LinkType Value : 127 LinkType Name : LINKTYPE\_IEEE802\_11\_RADIOTAP Description : IEEE 802.11 wireless LAN, preceded by a Radiotap header Reference : {{Radiotap}} {: spacing="compact"} LinkType Value : 128 LinkType Name : LINKTYPE\_TZSP Description : Tazmen Sniffer Protocol {: spacing="compact"} LinkType Value : 129 LinkType Name : LINKTYPE\_ARCNET\_LINUX Description : ARCNET Data Packets with Linux encapsulation {: spacing="compact"} LinkType Value : 130 LinkType Name : LINKTYPE\_JUNIPER\_MLPPP Description : Juniper Networks {: spacing="compact"} LinkType Value : 131 LinkType Name : LINKTYPE\_JUNIPER\_MLFR Description : Juniper Networks {: spacing="compact"} LinkType Value : 132 LinkType Name : LINKTYPE\_JUNIPER\_ES Description : Juniper Networks {: spacing="compact"} LinkType Value : 133 LinkType Name : LINKTYPE\_JUNIPER\_GGSN Description : Juniper Networks {: spacing="compact"} LinkType Value : 134 LinkType Name : LINKTYPE\_JUNIPER\_MFR Description : Juniper Networks {: spacing="compact"} LinkType Value : 135 LinkType Name : LINKTYPE\_JUNIPER\_ATM2 Description : Juniper Networks {: spacing="compact"} LinkType Value : 136 LinkType Name : LINKTYPE\_JUNIPER\_SERVICES Description : Juniper Networks {: spacing="compact"} LinkType Value : 137 LinkType Name : LINKTYPE\_JUNIPER\_ATM1 Description : Juniper Networks {: spacing="compact"} LinkType Value : 138 LinkType Name : LINKTYPE\_APPLE\_IP\_OVER\_IEEE1394 Description : Apple IP-over-IEEE 1394 cooked header Reference : {{LINKTYPE_APPLE_IP_OVER_IEEE1394}} {: spacing="compact"} LinkType Value : 139 LinkType Name : LINKTYPE\_MTP2\_WITH\_PHDR Description : SS7 MTP2 frames, with a pseudo-header Reference : {{LINKTYPE_MTP2_WITH_PHDR}} {: spacing="compact"} LinkType Value : 140 LinkType Name : LINKTYPE\_MTP2 Description : SS7 MTP2 packets Reference : {{LINKTYPE_MTP2}} {: spacing="compact"} LinkType Value : 141 LinkType Name : LINKTYPE\_MTP3 Description : SS7 MTP3 packets Reference : {{LINKTYPE_MTP3}} {: spacing="compact"} LinkType Value : 142 LinkType Name : LINKTYPE\_SCCP Description : SS7 SCCP packets Reference : {{LINKTYPE_SCCP}} {: spacing="compact"} LinkType Value : 143 LinkType Name : LINKTYPE\_DOCSIS Description : DOCSIS MAC frames Reference : {{DOCSIS-4.0-MULP}} {: spacing="compact"} LinkType Value : 144 LinkType Name : LINKTYPE\_LINUX\_IRDA Description : Linux-IrDA packets Reference : {{LINKTYPE_LINUX_IRDA}} {: spacing="compact"} LinkType Value : 145 LinkType Name : LINKTYPE\_IBM\_SP Description : IBM SP switch {: spacing="compact"} LinkType Value : 146 LinkType Name : LINKTYPE\_IBM\_SN Description : IBM Next Federation switch {: spacing="compact"} LinkType Value : 147 LinkType Name : LINKTYPE\_RESERVED\_01 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 148 LinkType Name : LINKTYPE\_RESERVED\_02 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 149 LinkType Name : LINKTYPE\_RESERVED\_03 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 150 LinkType Name : LINKTYPE\_RESERVED\_04 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 151 LinkType Name : LINKTYPE\_RESERVED\_05 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 152 LinkType Name : LINKTYPE\_RESERVED\_06 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 153 LinkType Name : LINKTYPE\_RESERVED\_07 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 154 LinkType Name : LINKTYPE\_RESERVED\_08 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 155 LinkType Name : LINKTYPE\_RESERVED\_09 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 156 LinkType Name : LINKTYPE\_RESERVED\_10 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 157 LinkType Name : LINKTYPE\_RESERVED\_11 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 158 LinkType Name : LINKTYPE\_RESERVED\_12 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 159 LinkType Name : LINKTYPE\_RESERVED\_13 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 160 LinkType Name : LINKTYPE\_RESERVED\_14 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 161 LinkType Name : LINKTYPE\_RESERVED\_15 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 162 LinkType Name : LINKTYPE\_RESERVED\_16 Description : For private use (deprecated) {: spacing="compact"} LinkType Value : 163 LinkType Name : LINKTYPE\_IEEE802\_11\_AVS Description : IEEE 802.11 wireless LAN, preceded by an AVS header Reference : {{AVS}} {: spacing="compact"} LinkType Value : 164 LinkType Name : LINKTYPE\_JUNIPER\_MONITOR Description : Juniper Networks {: spacing="compact"} LinkType Value : 165 LinkType Name : LINKTYPE\_BACNET\_MS\_TP Description : BACnet MS/TP frames Reference : {{LINKTYPE_BACNET_MS_TP}} {: spacing="compact"} LinkType Value : 166 LinkType Name : LINKTYPE\_PPP\_PPPD Description : PPP preceded by a direction octet and an HDLC-like control field Reference : {{LINKTYPE_PPP_PPPD}} {: spacing="compact"} LinkType Value : 167 LinkType Name : LINKTYPE\_JUNIPER\_PPPOE Description : Juniper Networks {: spacing="compact"} LinkType Value : 168 LinkType Name : LINKTYPE\_JUNIPER\_PPPOE\_ATM Description : Juniper Networks {: spacing="compact"} LinkType Value : 169 LinkType Name : LINKTYPE\_GPRS\_LLC Description : General Packet Radio Service Logical Link Control, as per 3GPP TS 04.64 Reference : {{3GPP-TS-04.64}} {: spacing="compact"} LinkType Value : 170 LinkType Name : LINKTYPE\_GPF\_T Description : Transparent-mapped generic framing procedure Reference : {{G.7041}} {: spacing="compact"} LinkType Value : 171 LinkType Name : LINKTYPE\_GPF\_F Description : Frame-mapped generic framing procedure Reference : {{G.7041}} {: spacing="compact"} LinkType Value : 172 LinkType Name : LINKTYPE\_GCOM\_T1E1 Description : Gcom T1/E1 line monitoring equipment {: spacing="compact"} LinkType Value : 173 LinkType Name : LINKTYPE\_GCOM\_SERIAL Description : Gcom T1/E1 line monitoring equipment {: spacing="compact"} LinkType Value : 174 LinkType Name : LINKTYPE\_JUNIPER\_PIC\_PEER Description : Juniper Networks {: spacing="compact"} LinkType Value : 175 LinkType Name : LINKTYPE\_ERF\_ETH Description : Endace TYPE_ETH ERF records Reference : {{LINKTYPE_ERF}} {: spacing="compact"} LinkType Value : 176 LinkType Name : LINKTYPE\_ERF\_POS Description : Endace TYPE_POS_HDLC ERF records Reference : {{LINKTYPE_ERF}} {: spacing="compact"} LinkType Value : 177 LinkType Name : LINKTYPE\_LINUX\_LAPD Description : Linux vISDN LAPD frames Reference : {{LINKTYPE_LINUX_LAPD}} {: spacing="compact"} LinkType Value : 178 LinkType Name : LINKTYPE\_JUNIPER\_ETHER Description : Juniper Networks {: spacing="compact"} LinkType Value : 179 LinkType Name : LINKTYPE\_JUNIPER\_PPP Description : Juniper Networks {: spacing="compact"} LinkType Value : 180 LinkType Name : LINKTYPE\_JUNIPER\_FRELAY Description : Juniper Networks {: spacing="compact"} LinkType Value : 181 LinkType Name : LINKTYPE\_JUNIPER\_CHDLC Description : Juniper Networks {: spacing="compact"} LinkType Value : 182 LinkType Name : LINKTYPE\_MFR Description : FRF.16.1 Multi-Link Frame Relay frames Reference : {{LINKTYPE_MFR}} {: spacing="compact"} LinkType Value : 183 LinkType Name : LINKTYPE\_JUNIPER\_VP Description : Juniper Networks {: spacing="compact"} LinkType Value : 184 LinkType Name : LINKTYPE\_A429 Description : ARINC 429 frames {: spacing="compact"} LinkType Value : 185 LinkType Name : LINKTYPE\_A653\_ICM Description : Arinc 653 Interpartition Communication messages {: spacing="compact"} LinkType Value : 186 LinkType Name : LINKTYPE\_USB\_FREEBSD Description : USB traffic captured on FreeBSD {: spacing="compact"} LinkType Value : 187 LinkType Name : LINKTYPE\_BLUETOOTH\_HCI\_H4 Description : Bluetooth HCI UART Transport Layer packets Reference : {{LINKTYPE_BLUETOOTH_HCI_H4}} {: spacing="compact"} LinkType Value : 188 LinkType Name : LINKTYPE\_IEEE802\_16\_MAC\_CPS Description : IEEE 802.16 MAC Common Part Sublayer {: spacing="compact"} LinkType Value : 189 LinkType Name : LINKTYPE\_USB\_LINUX Description : USB packets, beginning with a Linux USB header Reference : {{LINKTYPE_USB_LINUX}} {: spacing="compact"} LinkType Value : 190 LinkType Name : LINKTYPE\_CAN20B Description : Controller Area Network (CAN) v. 2.0B packets {: spacing="compact"} LinkType Value : 191 LinkType Name : LINKTYPE\_IEEE802\_15\_4\_LINUX Description : IEEE 802.15.4 with address fields padded by Linux {: spacing="compact"} LinkType Value : 192 LinkType Name : LINKTYPE\_PPI Description : Per-Packet Information header preceding packet data Reference : {{LINKTYPE_PPI}} {: spacing="compact"} LinkType Value : 193 LinkType Name : LINKTYPE\_IEEE802\_16\_MAC\_CPS\_RADIO Description : 802.16 MAC Common Part Sublayer plus radio header {: spacing="compact"} LinkType Value : 194 LinkType Name : LINKTYPE\_JUNIPER\_ISM Description : Juniper Networks {: spacing="compact"} LinkType Value : 195 LinkType Name : LINKTYPE\_IEEE802\_15\_4\_WITHFCS Description : IEEE 802.15.4 with FCS Reference : {{LINKTYPE_IEEE802_15_4_WITHFCS}} {: spacing="compact"} LinkType Value : 196 LinkType Name : LINKTYPE\_SITA Description : Various link-layer types, with a pseudo-header Reference : {{LINKTYPE_SITA}} {: spacing="compact"} LinkType Value : 197 LinkType Name : LINKTYPE\_ERF Description : Endace ERF records Reference : {{LINKTYPE_ERF}} {: spacing="compact"} LinkType Value : 198 LinkType Name : LINKTYPE\_RAIF1 Description : Ethernet packets captured from a u10 Networks board {: spacing="compact"} LinkType Value : 199 LinkType Name : LINKTYPE\_IPMB\_KONTRON Description : IPMB packet for IPMI, with a 2-octet header {: spacing="compact"} LinkType Value : 200 LinkType Name : LINKTYPE\_JUNIPER\_ST Description : Juniper Networks {: spacing="compact"} LinkType Value : 201 LinkType Name : LINKTYPE\_BLUETOOTH\_HCI\_H4\_WITH\_PHDR Description : Bluetooth HCI UART Transport Layer packets with a direction pseudo-header Reference : {{LINKTYPE_BLUETOOTH_HCI_H4_WITH_PHDR}} {: spacing="compact"} LinkType Value : 202 LinkType Name : LINKTYPE\_AX25\_KISS Description : KISS frames between a host and an AX.25 TNC Reference : {{LINKTYPE_AX25_KISS}} {: spacing="compact"} LinkType Value : 203 LinkType Name : LINKTYPE\_LAPD Description : Q.921 LAPD frames Reference : {{LINKTYPE_LAPD}} {: spacing="compact"} LinkType Value : 204 LinkType Name : LINKTYPE\_PPP\_WITH\_DIR Description : PPP, with a direction header Reference : {{LINKTYPE_PPP_WITH_DIR}} {: spacing="compact"} LinkType Value : 205 LinkType Name : LINKTYPE\_C\_HDLC\_WITH\_DIR Description : Cisco PPP with HDLC framing, with a direction header Reference : {{LINKTYPE_C_HDLC_WITH_DIR}} {: spacing="compact"} LinkType Value : 206 LinkType Name : LINKTYPE\_FRELAY\_WITH\_DIR Description : Frame Relay LAPF, with a direction header Reference : {{LINKTYPE_FRELAY_WITH_DIR}} {: spacing="compact"} LinkType Value : 207 LinkType Name : LINKTYPE\_LAPB\_WITH\_DIR Description : X.25 LAPB, with a direction header Reference : {{LINKTYPE_LAPB_WITH_DIR}} {: spacing="compact"} LinkType Value : 208 LinkType Name : WillBarker-Proprietary Description : Proprietary Link-Layer type {: spacing="compact"} LinkType Value : 209 LinkType Name : LINKTYPE\_I2C\_LINUX Description : Linux I2C packets Reference : {{LINKTYPE_I2C_LINUX}} {: spacing="compact"} LinkType Value : 210 LinkType Name : LINKTYPE\_FLEXRAY Description : FlexRay frames or symbols, with a pseudo-header Reference : {{LINKTYPE_FLEXRAY}} {: spacing="compact"} LinkType Value : 211 LinkType Name : LINKTYPE\_MOST Description : Media Oriented Systems Transport (MOST) bus {: spacing="compact"} LinkType Value : 212 LinkType Name : LINKTYPE\_LIN Description : Local Interconnect Network (LIN) automotive bus, with a metadata header Reference : {{LINKTYPE_LIN}} {: spacing="compact"} LinkType Value : 213 LinkType Name : LINKTYPE\_X2E\_SERIAL Description : X2E serial line captures {: spacing="compact"} LinkType Value : 214 LinkType Name : LINKTYPE\_X2E\_XORAYA Description : X2E Xoraya data loggers {: spacing="compact"} LinkType Value : 215 LinkType Name : LINKTYPE\_IEEE802\_15\_4\_NONASK\_PHY Description : IEEE 802.15.4 with PHY header Reference : {{LINKTYPE_IEEE802_15_4_NONASK_PHY}} {: spacing="compact"} LinkType Value : 216 LinkType Name : LINKTYPE\_LINUX\_EVDEV Description : Linux evdev messages {: spacing="compact"} LinkType Value : 217 LinkType Name : LINKTYPE\_GSMTAP\_UM Description : GSM Um interface, with gsmtap header {: spacing="compact"} LinkType Value : 218 LinkType Name : LINKTYPE\_GSMTAP\_ABIS Description : GSM Abis interface, with gsmtap header {: spacing="compact"} LinkType Value : 219 LinkType Name : LINKTYPE\_MPLS Description : MPLS packets with MPLS label as the header {: spacing="compact"} LinkType Value : 220 LinkType Name : LINKTYPE\_USB\_LINUX\_MMAPPED Description : USB packets, beginning with an extended Linux USB header Reference : {{LINKTYPE_USB_LINUX_MMAPPED}} {: spacing="compact"} LinkType Value : 221 LinkType Name : LINKTYPE\_DECT Description : DECT packets, with a pseudo-header {: spacing="compact"} LinkType Value : 222 LinkType Name : LINKTYPE\_AOS Description : OS Space Data Link Protocol {: spacing="compact"} LinkType Value : 223 LinkType Name : LINKTYPE\_WIHART Description : Wireless HART (Highway Addressable Remote Transducer) {: spacing="compact"} LinkType Value : 224 LinkType Name : LINKTYPE\_FC\_2 Description : Fibre Channel FC-2 frames Reference : {{LINKTYPE_FC_2}} {: spacing="compact"} LinkType Value : 225 LinkType Name : LINKTYPE\_FC\_2\_WITH\_FRAME\_DELIMS Description : Fibre Channel FC-2 frames with SOF and EOF Reference : {{LINKTYPE_FC_2_WITH_FRAME_DELIMS}} {: spacing="compact"} LinkType Value : 226 LinkType Name : LINKTYPE\_IPNET Description : Solaris ipnet Reference : {{LINKTYPE_IPNET}} {: spacing="compact"} LinkType Value : 227 LinkType Name : LINKTYPE\_CAN\_SOCKETCAN Description : Controller Area Network (CAN) frames, with a metadata header Reference : {{LINKTYPE_CAN_SOCKETCAN}} {: spacing="compact"} LinkType Value : 228 LinkType Name : LINKTYPE\_IPV4 Description : IPv4 without link-layer headers Reference : {{LINKTYPE_IPV4}} {{?RFC791}} {: spacing="compact"} LinkType Value : 229 LinkType Name : LINKTYPE\_IPV6 Description : IPv6 without link-layer headers Reference : {{LINKTYPE_IPV6}} {{?RFC8200}} {: spacing="compact"} LinkType Value : 230 LinkType Name : LINKTYPE\_IEEE802\_15\_4\_NOFCS Description : IEEE 802.15.4 without FCS Reference : {{LINKTYPE_IEEE802_15_4_NOFCS}} {: spacing="compact"} LinkType Value : 231 LinkType Name : LINKTYPE\_DBUS Description : D-Bus messages Reference : {{LINKTYPE_DBUS}} {: spacing="compact"} LinkType Value : 232 LinkType Name : LINKTYPE\_JUNIPER\_VS Description : Juniper Networks {: spacing="compact"} LinkType Value : 233 LinkType Name : LINKTYPE\_JUNIPER\_SRX\_E2E Description : Juniper Networks {: spacing="compact"} LinkType Value : 234 LinkType Name : LINKTYPE\_JUNIPER\_FIBRECHANNEL Description : Juniper Networks {: spacing="compact"} LinkType Value : 235 LinkType Name : LINKTYPE\_DVB\_CI Description : DVB-CI messages, with a pseudo-header Reference : {{DVB-CI-PCAP}} {: spacing="compact"} LinkType Value : 236 LinkType Name : LINKTYPE\_MUX27010 Description : Variant of 3GPP TS 27.010 multiplexing protocol Reference : {{LINKTYPE_MUX27010}} {: spacing="compact"} LinkType Value : 237 LinkType Name : LINKTYPE\_STANAG\_5066\_D\_PDU Description : STANAG 5066 D_PDUs Reference : {{LINKTYPE_STANAG_5066_D_PDU}} {: spacing="compact"} LinkType Value : 238 LinkType Name : LINKTYPE\_JUNIPER\_ATM\_CEMIC Description : Juniper Networks {: spacing="compact"} LinkType Value : 239 LinkType Name : LINKTYPE\_NFLOG Description : Linux netlink NETLINK NFLOG socket log messages Reference : {{LINKTYPE_NFLOG}} {: spacing="compact"} LinkType Value : 240 LinkType Name : LINKTYPE\_NETANALYZER Description : Ethernet frames with netANALYZER pseudo-header Reference : {{LINKTYPE_NETANALYZER}} {: spacing="compact"} LinkType Value : 241 LinkType Name : LINKTYPE\_NETANALYZER\_TRANSPARENT Description : Ethernet frames with netANALYZER pseudo-header, preamble, and SFD Reference : {{LINKTYPE_NETANALYZER_TRANSPARENT}} {: spacing="compact"} LinkType Value : 242 LinkType Name : LINKTYPE\_IPOIB Description : IP-over-InfiniBand Reference : {{LINKTYPE_IPOIB}} {: spacing="compact"} LinkType Value : 243 LinkType Name : LINKTYPE\_MPEG\_2\_TS Description : MPEG-2 Transport Stream transport packets Reference : {{LINKTYPE_MPEG_2_TS}} {: spacing="compact"} LinkType Value : 244 LinkType Name : LINKTYPE\_NG40 Description : Frames from ng4T GmbH's ng40 protocol tester Reference : {{LINKTYPE_NG40}} {: spacing="compact"} LinkType Value : 245 LinkType Name : LINKTYPE\_NFC\_LLCP Description : NFC Logical Link Control Protocol frames, with a pseudo-header Reference : {{LINKTYPE_NFC_LLCP}} {: spacing="compact"} LinkType Value : 246 LinkType Name : LINKTYPE\_PFSYNC Description : pfsync output {: spacing="compact"} LinkType Value : 247 LinkType Name : LINKTYPE\_INFINIBAND Description : InfiniBand data packets Reference : {{LINKTYPE_INFINIBAND}} {: spacing="compact"} LinkType Value : 248 LinkType Name : LINKTYPE\_SCTP Description : SCTP packets, with no lower-level protocols such as IPv4 or IPv6 Reference : {{?RFC9260}} {: spacing="compact"} LinkType Value : 249 LinkType Name : LINKTYPE\_USBPCAP Description : USB packets, beginning with a USBPcap header Reference : {{USBPcap}} {: spacing="compact"} LinkType Value : 250 LinkType Name : LINKTYPE\_RTAC\_SERIAL Description : Serial-line packet from the Schweitzer Engineering Laboratories RTAC product Reference : {{LINKTYPE_RTAC_SERIAL}} {: spacing="compact"} LinkType Value : 251 LinkType Name : LINKTYPE\_BLUETOOTH\_LE\_LL Description : Bluetooth Low Energy link-layer packets Reference : {{LINKTYPE_BLUETOOTH_LE_LL}} {: spacing="compact"} LinkType Value : 252 LinkType Name : LINKTYPE\_WIRESHARK\_UPPER\_PDU Description : Wireshark {: spacing="compact"} LinkType Value : 253 LinkType Name : LINKTYPE\_NETLINK Description : Linux Netlink capture encapsulation Reference : {{LINKTYPE_NETLINK}} {: spacing="compact"} LinkType Value : 254 LinkType Name : LINKTYPE\_BLUETOOTH\_LINUX\_MONITOR Description : Bluetooth Linux Monitor Reference : {{LINKTYPE_BLUETOOTH_LINUX_MONITOR}} {: spacing="compact"} LinkType Value : 255 LinkType Name : LINKTYPE\_BLUETOOTH\_BREDR\_BB Description : Bluetooth Basic Rate and Enhanced Data Rate baseband packets Reference : {{LINKTYPE_BLUETOOTH_BREDR_BB}} {: spacing="compact"} LinkType Value : 256 LinkType Name : LINKTYPE\_BLUETOOTH\_LE\_LL\_WITH\_PHDR Description : Bluetooth Low Energy link-layer packets Reference : {{LINKTYPE_BLUETOOTH_LE_LL_WITH_PHDR}} {: spacing="compact"} LinkType Value : 257 LinkType Name : LINKTYPE\_PROFIBUS\_DL Description : PROFIBUS data link layer packets Reference : {{LINKTYPE_PROFIBUS_DL}} {: spacing="compact"} LinkType Value : 258 LinkType Name : LINKTYPE\_PKTAP Description : Apple PKTAP capture encapsulation Reference : {{LINKTYPE_PKTAP}} {: spacing="compact"} LinkType Value : 259 LinkType Name : LINKTYPE\_EPON Description : Ethernet-over-passive-optical-network packets, including preamble octets Reference : {{LINKTYPE_EPON}} {: spacing="compact"} LinkType Value : 260 LinkType Name : LINKTYPE\_IPMI\_HPM\_2 Description : IPMI HPM.2 trace packets Reference : {{LINKTYPE_IPMI_HPM_2}} {: spacing="compact"} LinkType Value : 261 LinkType Name : LINKTYPE\_ZWAVE\_R1\_R2 Description : Z-Wave RF profile R1 and R2 packets Reference : {{LINKTYPE_ZWAVE_R1_R2}} {: spacing="compact"} LinkType Value : 262 LinkType Name : LINKTYPE\_ZWAVE\_R3 Description : Z-Wave RF profile R3 packets Reference : {{LINKTYPE_ZWAVE_R3}} {: spacing="compact"} LinkType Value : 263 LinkType Name : LINKTYPE\_WATTSTOPPER\_DLM Description : WattStopper Digital Lighting Management (DLM) and Legrand Nitoo Open protocol packets Reference : {{LINKTYPE_WATTSTOPPER_DLM}} {: spacing="compact"} LinkType Value : 264 LinkType Name : LINKTYPE\_ISO\_14443 Description : ISO 14443 contactless smartcard messages Reference : {{ISO-14443-PCAP}} {: spacing="compact"} LinkType Value : 265 LinkType Name : LINKTYPE\_RDS Description : IEC 62106 Radio data system (RDS) groups Reference : {{LINKTYPE_RDS}} {: spacing="compact"} LinkType Value : 266 LinkType Name : LINKTYPE\_USB\_DARWIN Description : USB packets captured on a Darwin-based operating system (macOS, etc.) Reference : {{LINKTYPE_USB_DARWIN}} {: spacing="compact"} LinkType Value : 267 LinkType Name : LINKTYPE\_OPENFLOW Description : OpenBSD DLT_OPENFLOW {: spacing="compact"} LinkType Value : 268 LinkType Name : LINKTYPE\_SDLC Description : SNA SDLC packets Reference : {{LINKTYPE_SDLC}} {: spacing="compact"} LinkType Value : 269 LinkType Name : LINKTYPE\_TI\_LLN\_SNIFFER Description : Texas Instruments protocol sniffer {: spacing="compact"} LinkType Value : 270 LinkType Name : LINKTYPE\_LORATAP Description : LoRaWan packets with a LoRaTap pseudo-header Reference : {{LINKTYPE_LORATAP}} {: spacing="compact"} LinkType Value : 271 LinkType Name : LINKTYPE\_VSOCK Description : Protocol for communication between host and guest machines in VMware and KVM hypervisors Reference : {{LINKTYPE_VSOCK}} {: spacing="compact"} LinkType Value : 272 LinkType Name : LINKTYPE\_NORDIC\_BLE Description : Messages to and from a Nordic Semiconductor nRF Sniffer for Bluetooth LE packets Reference : {{LINKTYPE_NORDIC_BLE}} {: spacing="compact"} LinkType Value : 273 LinkType Name : LINKTYPE\_DOCSIS31\_XRA31 Description : DOCSIS packets and bursts, preceded by a pseudo-header Reference : {{DOCSIS-XRA}} {{DOCSIS-4.0-MULP}} {: spacing="compact"} LinkType Value : 274 LinkType Name : LINKTYPE\_ETHERNET\_MPACKET Description : IEEE 802.3 mPackets Reference : {{LINKTYPE_ETHERNET_MPACKET}} {: spacing="compact"} LinkType Value : 275 LinkType Name : LINKTYPE\_DISPLAYPORT\_AUX Description : DisplayPort AUX channel monitoring messages Reference : {{LINKTYPE_DISPLAYPORT_AUX}} {: spacing="compact"} LinkType Value : 276 LinkType Name : LINKTYPE\_LINUX\_SLL2 Description : Linux cooked capture encapsulation v2 Reference : {{LINKTYPE_LINUX_SLL2}} {: spacing="compact"} LinkType Value : 277 LinkType Name : LINKTYPE\_SERCOS\_MONITOR Description : Sercos Monitor {: spacing="compact"} LinkType Value : 278 LinkType Name : LINKTYPE\_OPENVIZSLA Description : OpenVizsla FPGA-based USB sniffer Reference : {{OpenVizsla}} {: spacing="compact"} LinkType Value : 279 LinkType Name : LINKTYPE\_EBHSCR Description : Elektrobit High Speed Capture and Replay (EBHSCR) format Reference : {{EBHSCR}} {: spacing="compact"} LinkType Value : 280 LinkType Name : LINKTYPE\_VPP\_DISPATCH Description : fd.io VPP graph dispatcher trace records Reference : {{FD.io-VPP}} {: spacing="compact"} LinkType Value : 281 LinkType Name : LINKTYPE\_DSA\_TAG\_BRCM Description : Ethernet frames, with a Broadcom switch tag inserted Reference : {{LINKTYPE_DSA_TAG_BRCM}} {: spacing="compact"} LinkType Value : 282 LinkType Name : LINKTYPE\_DSA\_TAG\_BRCM\_PREPEND Description : Ethernet frames, with a Broadcom switch tag prepended Reference : {{LINKTYPE_DSA_TAG_BRCM_PREPEND}} {: spacing="compact"} LinkType Value : 283 LinkType Name : LINKTYPE\_IEEE802\_15\_4\_TAP Description : IEEE 802.15.4 with a tap header preceding it Reference : {{Exegin-802.15.4-TAP}} {: spacing="compact"} LinkType Value : 284 LinkType Name : LINKTYPE\_DSA\_TAG\_DSA Description : Ethernet frames, with a Marvell DSA switch tag inserted Reference : {{LINKTYPE_DSA_TAG_DSA}} {: spacing="compact"} LinkType Value : 285 LinkType Name : LINKTYPE\_DSA\_TAG\_EDSA Description : Ethernet frames, with a Marvell EDSA switch tag inserted Reference : {{LINKTYPE_DSA_TAG_EDSA}} {: spacing="compact"} LinkType Value : 286 LinkType Name : LINKTYPE\_ELEE Description : ELEE lawful intercept protocol {: spacing="compact"} LinkType Value : 287 LinkType Name : LINKTYPE\_Z\_WAVE\_SERIAL Description : Serial frames transmitted between a host and a Z-Wave chip over an RS-232 or USB serial connection Reference : {{Z-WAVE-SERIAL}} section 5 {: spacing="compact"} LinkType Value : 288 LinkType Name : LINKTYPE\_USB\_2\_0 Description : USB 2.0, 1.1, or 1.0 packets Reference : {{LINKTYPE_USB_2_0}} {: spacing="compact"} LinkType Value : 289 LinkType Name : LINKTYPE\_ATSC\_ALP Description : ATSC Link-Layer Protocol frames Reference : {{LINKTYPE_ATSC_ALP}} {: spacing="compact"} LinkType Value : 290 LinkType Name : LINKTYPE\_ETW Description : Event Tracing for Windows messages Reference : {{LINKTYPE_ETW}} {: spacing="compact"} LinkType Value : 291 LinkType Name : LINKTYPE\_NETANALYZER\_NG Description : Hilscher Gesellschaft fuer Systemautomation mbH netANALYZER NG hardware and software {: spacing="compact"} LinkType Value : 292 LinkType Name : LINKTYPE\_ZBOSS\_NCP Description : ZBOSS NCP Serial Protocol, with a pseudo-header Reference : {{LINKTYPE_ZBOSS_NCP}} {: spacing="compact"} LinkType Value : 293 LinkType Name : LINKTYPE\_USB\_2\_0\_LOW\_SPEED Description : Low-Speed USB 2.0, 1.1, or 1.0 packets Reference : {{LINKTYPE_USB_2_0_LOW_SPEED}} {: spacing="compact"} LinkType Value : 294 LinkType Name : LINKTYPE\_USB\_2\_0\_FULL\_SPEED Description : Full-Speed USB 2.0, 1.1, or 1.0 packets Reference : {{LINKTYPE_USB_2_0_FULL_SPEED}} {: spacing="compact"} LinkType Value : 295 LinkType Name : LINKTYPE\_USB\_2\_0\_HIGH\_SPEED Description : High-Speed USB 2.0 packets Reference : {{LINKTYPE_USB_2_0_HIGH_SPEED}} {: spacing="compact"} LinkType Value : 296 LinkType Name : LINKTYPE\_AUERSWALD\_LOG Description : Auerswald Logger Protocol Reference : {{Auerswald-Logger}} {: spacing="compact"} LinkType Value : 297 LinkType Name : LINKTYPE\_ZWAVE\_TAP Description : Z-Wave packets, with a metadata header Reference : {{LINKTYPE_ZWAVE_TAP}} {: spacing="compact"} LinkType Value : 298 LinkType Name : LINKTYPE\_SILABS\_DEBUG\_CHANNEL Description : Silicon Labs debug channel protocol Reference : {{Silabs-Debug-Channel}} {: spacing="compact"} LinkType Value : 299 LinkType Name : LINKTYPE\_FIRA\_UCI Description : Ultra-wideband (UWB) controller interface protocol (UCI) Reference : {{LINKTYPE_FIRA_UCI}} {: spacing="compact"} LinkType Value : 300 LinkType Name : LINKTYPE\_MDB Description : MDB (Multi-Drop Bus) protocol Reference : {{MDB-PCAP}} {: spacing="compact"} LinkType Value : 301 LinkType Name : LINKTYPE\_DECT\_NR Description : DECT-2020 New Radio (NR) MAC layer Reference : {{LINKTYPE_DECT_NR}} {: spacing="compact"} ### Guidance for Designated Experts {#sec-de} When processing a request for an allocation, the Designated Experts will encourage the requester to provide a specification at a stable URL. There is no requirement for a specification, but often review of the specification allows the Designated Expert to determine if the allocation actually is a duplicate of another specification. When the contents of the link type can contain an IPv4 or IPv6 header, then the octets between the beginning of the link type and the IP header needs to be clearly specified. Registrations for specifications that are not publicly available are acceptable. This includes specifications obtained via liaison agreements (such as to ITU-T, drafts, IEEE, etc.), those that may eventually be made public, or those for which no public document will be available. The minimal requirement is to provide a contact for that link type. For other documents, the Designated Expert will need use their judgement, or consult the OPSAWG or an Area Director. # Security Considerations This document describes the IANA registration rules for the LinkType encapsulations. PCAP-related packet file formats use this value to determine what kind of headers precede network packet captures. Many of these formats can contain IPv4 and IPv6 packets. A system reading PCAP-related format captures can be subject to arbitrary inputs that may be controlled by malicious entities, so utmost caution is required. Many LinkType formats include a "snapshot" length, which may be smaller than the actual packet. It is therefore very likely that trailing parts of a packet capture may be omitted, yet internal length fields in the packets will claim the packet is bigger than the capture. This leads to trivial buffer overreads, and systems interpreting the packets need to carefully scrutinize all attempts to read data from a capture. # Contributors PCAP has been developed over three and half decades by a variety of developers, including: Bill Fenner, Denis Ovsienko, Francois-Xavier Le Bail, Fulvio Risso, Gerald Combs, Gianluca Varenni, Gisle Vanem, Hannes Gredler, Joerg Mayer, Michal Sekletar, Stephen Donnelly, Torsten Landschoff, and Jun-ichiro itojun Hagino. PCAP was originally created at LBL by Steve McCanne, Craig Leres, and Van Jacobson. # Acknowledgments The authors wish to thank: Michael Tuexen, Mohamed Boucadair, Carsten Bormann, Henk Birkholtz, and Robert Wilton their invaluable comments and encouragement. <!-- COMMENTS. 1) if editing with emacs, please use markdown-mode 2) with gin (auto-wrap) *TURNED OFF*, 3) and visual-line-mode *ON* 4) start each sentence on a new line, and mostly keep it on one line. INSERT GVIM settings. -->
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