editcap: The available encapsulation types for the "-T" flag are:
    ap1394 - Apple IP-over-IEEE 1394
    arcnet - ARCNET
    arcnet_linux - Linux ARCNET
    ascend - Lucent/Ascend access equipment
    atm-pdus - ATM PDUs
    atm-pdus-untruncated - ATM PDUs - untruncated
    atm-rfc1483 - RFC 1483 ATM
    ax25 - Amateur Radio AX.25
    ax25-kiss - AX.25 with KISS header
    bacnet-ms-tp - BACnet MS/TP
    bacnet-ms-tp-with-direction - BACnet MS/TP with Directional Info
    ber - ASN.1 Basic Encoding Rules
    bluetooth-bredr-bb-rf - Bluetooth BR/EDR Baseband RF
    bluetooth-h4 - Bluetooth H4
    bluetooth-h4-linux - Bluetooth H4 with linux header
    bluetooth-hci - Bluetooth without transport layer
    bluetooth-le-ll - Bluetooth Low Energy Link Layer
    bluetooth-le-ll-rf - Bluetooth Low Energy Link Layer RF
    bluetooth-linux-monitor - Bluetooth Linux Monitor
    can20b - Controller Area Network 2.0B
    chdlc - Cisco HDLC
    chdlc-with-direction - Cisco HDLC with Directional Info
    cosine - CoSine L2 debug log
    dbus - D-Bus
    dct2000 - Catapult DCT2000
    docsis - Data Over Cable Service Interface Specification
    docsis31_xra31 - DOCSIS with Excentis XRA pseudo-header
    dpauxmon - DisplayPort AUX channel with Unigraf pseudo-header
    dpnss_link - Digital Private Signalling System No 1 Link Layer
    dvbci - DVB-CI (Common Interface)
    ebhscr - Elektrobit High Speed Capture and Replay
    enc - OpenBSD enc(4) encapsulating interface
    epon - Ethernet Passive Optical Network
    erf - Extensible Record Format
    ether - Ethernet
    ether-mpacket - IEEE 802.3br mPackets
    ether-nettl - Ethernet with nettl headers
    fc2 - Fibre Channel FC-2
    fc2sof - Fibre Channel FC-2 With Frame Delimiter
    fddi - FDDI
    fddi-nettl - FDDI with nettl headers
    fddi-swapped - FDDI with bit-swapped MAC addresses
    flexray - FlexRay
    frelay - Frame Relay
    frelay-with-direction - Frame Relay with Directional Info
    gcom-serial - GCOM Serial
    gcom-tie1 - GCOM TIE1
    gfp-f - ITU-T G.7041/Y.1303 Generic Framing Procedure Frame-mapped mode
    gfp-t - ITU-T G.7041/Y.1303 Generic Framing Procedure Transparent mode
    gprs-llc - GPRS LLC
    gsm_um - GSM Um Interface
    hhdlc - HiPath HDLC
    i2c-linux - I2C with Linux-specific pseudo-header
    ieee-802-11 - IEEE 802.11 Wireless LAN
    ieee-802-11-avs - IEEE 802.11 plus AVS radio header
    ieee-802-11-netmon - IEEE 802.11 plus Network Monitor radio header
    ieee-802-11-prism - IEEE 802.11 plus Prism II monitor mode radio header
    ieee-802-11-radio - IEEE 802.11 Wireless LAN with radio information
    ieee-802-11-radiotap - IEEE 802.11 plus radiotap radio header
    ieee-802-16-mac-cps - IEEE 802.16 MAC Common Part Sublayer
    infiniband - InfiniBand
    ios - Cisco IOS internal
    ip-ib - IP over IB
    ip-over-fc - RFC 2625 IP-over-Fibre Channel
    ip-over-ib - IP over InfiniBand
    ipfix - RFC 5655/RFC 5101 IPFIX
    ipmb-kontron - Intelligent Platform Management Bus with Kontron pseudo-header
    ipmi-trace - IPMI Trace Data Collection
    ipnet - Solaris IPNET
    irda - IrDA
    isdn - ISDN
    iso14443 - ISO 14443 contactless smartcard standards
    ixveriwave - IxVeriWave header and stats block
    jfif - JPEG/JFIF
    json - JavaScript Object Notation
    juniper-atm1 - Juniper ATM1
    juniper-atm2 - Juniper ATM2
    juniper-chdlc - Juniper C-HDLC
    juniper-ether - Juniper Ethernet
    juniper-frelay - Juniper Frame-Relay
    juniper-ggsn - Juniper GGSN
    juniper-mlfr - Juniper MLFR
    juniper-mlppp - Juniper MLPPP
    juniper-ppp - Juniper PPP
    juniper-pppoe - Juniper PPPoE
    juniper-st - Juniper Secure Tunnel Information
    juniper-svcs - Juniper Services
    juniper-vn - Juniper VN
    juniper-vp - Juniper Voice PIC
    k12 - K12 protocol analyzer
    lapb - LAPB
    lapd - LAPD
    layer1-event - EyeSDN Layer 1 event
    lin - Local Interconnect Network
    linux-atm-clip - Linux ATM CLIP
    linux-lapd - LAPD with Linux pseudo-header
    linux-sll - Linux cooked-mode capture v1
    linux-sll2 - Linux cooked-mode capture v2
    log_3GPP - 3GPP Phone Log
    logcat - Android Logcat Binary format
    logcat_brief - Android Logcat Brief text format
    logcat_long - Android Logcat Long text format
    logcat_process - Android Logcat Process text format
    logcat_tag - Android Logcat Tag text format
    logcat_thread - Android Logcat Thread text format
    logcat_threadtime - Android Logcat Threadtime text format
    logcat_time - Android Logcat Time text format
    loop - OpenBSD loopback
    loratap - LoRaTap
    ltalk - Localtalk
    message_analyzer_wfp_capture2_v4 - Message Analyzer WFP Capture2 v4
    message_analyzer_wfp_capture2_v6 - Message Analyzer WFP Capture2 v6
    message_analyzer_wfp_capture_auth_v4 - Message Analyzer WFP Capture Auth v4
    message_analyzer_wfp_capture_auth_v6 - Message Analyzer WFP Capture Auth v6
    message_analyzer_wfp_capture_v4 - Message Analyzer WFP Capture v4
    message_analyzer_wfp_capture_v6 - Message Analyzer WFP Capture v6
    mime - MIME
    most - Media Oriented Systems Transport
    mp2ts - ISO/IEC 13818-1 MPEG2-TS
    mp4 - MP4 files
    mpeg - MPEG
    mtp2 - SS7 MTP2
    mtp2-with-phdr - MTP2 with pseudoheader
    mtp3 - SS7 MTP3
    mux27010 - MUX27010
    netanalyzer - Hilscher netANALYZER
    netanalyzer-transparent - Hilscher netANALYZER-Transparent
    netlink - Linux Netlink
    netmon_event - Network Monitor Network Event
    netmon_filter - Network Monitor Filter
    netmon_header - Network Monitor Header
    netmon_network_info - Network Monitor Network Info
    nfc-llcp - NFC LLCP
    nflog - NFLOG
    nordic_ble - Nordic BLE Sniffer
    nstrace10 - NetScaler Encapsulation 1.0 of Ethernet
    nstrace20 - NetScaler Encapsulation 2.0 of Ethernet
    nstrace30 - NetScaler Encapsulation 3.0 of Ethernet
    nstrace35 - NetScaler Encapsulation 3.5 of Ethernet
    null - NULL/Loopback
    packetlogger - Apple Bluetooth PacketLogger
    pflog - OpenBSD PF Firewall logs
    pflog-old - OpenBSD PF Firewall logs, pre-3.4
    pktap - Apple PKTAP
    ppi - Per-Packet Information header
    ppp - PPP
    ppp-with-direction - PPP with Directional Info
    pppoes - PPP-over-Ethernet session
    raw-icmp-nettl - Raw ICMP with nettl headers
    raw-icmpv6-nettl - Raw ICMPv6 with nettl headers
    raw-telnet-nettl - Raw telnet with nettl headers
    rawip - Raw IP
    rawip-nettl - Raw IP with nettl headers
    rawip4 - Raw IPv4
    rawip6 - Raw IPv6
    redback - Redback SmartEdge
    rfc7468 - RFC 7468 file
    rtac-serial - RTAC serial-line
    ruby_marshal - Ruby marshal object
    s4607 - STANAG 4607
    s5066-dpdu - STANAG 5066 Data Transfer Sublayer PDUs(D_PDU)
    sccp - SS7 SCCP
    sctp - SCTP
    sdh - SDH
    sdjournal - systemd journal
    sdlc - SDLC
    sita-wan - SITA WAN packets
    slip - SLIP
    socketcan - SocketCAN
    symantec - Symantec Enterprise Firewall
    tnef - Transport-Neutral Encapsulation Format
    tr - Token Ring
    tr-nettl - Token Ring with nettl headers
    tzsp - Tazmen sniffer protocol
    unknown - Unknown
    unknown-nettl - Unknown link-layer type with nettl headers
    usb-20 - USB 2.0/1.1/1.0 packets
    usb-darwin - USB packets with Darwin (macOS, etc.) headers
    usb-freebsd - USB packets with FreeBSD header
    usb-linux - USB packets with Linux header
    usb-linux-mmap - USB packets with Linux header and padding
    usb-usbpcap - USB packets with USBPcap header
    user0 - USER 0
    user1 - USER 1
    user2 - USER 2
    user3 - USER 3
    user4 - USER 4
    user5 - USER 5
    user6 - USER 6
    user7 - USER 7
    user8 - USER 8
    user9 - USER 9
    user10 - USER 10
    user11 - USER 11
    user12 - USER 12
    user13 - USER 13
    user14 - USER 14
    user15 - USER 15
    v5-ef - V5 Envelope Function
    vpp - Vector Packet Processing graph dispatch trace
    vsock - Linux vsock
    whdlc - Wellfleet HDLC
    wireshark-upper-pdu - Wireshark Upper PDU export
    wpan - IEEE 802.15.4 Wireless PAN
    wpan-nofcs - IEEE 802.15.4 Wireless PAN with FCS not present
    wpan-nonask-phy - IEEE 802.15.4 Wireless PAN non-ASK PHY
    wpan-tap - IEEE 802.15.4 Wireless with TAP pseudo-header
    x2e-serial - X2E serial line capture
    x2e-xoraya - X2E Xoraya
    x25-nettl - X.25 with nettl headers
    xeth - Xerox 3MB Ethernet
    zwave-serial - Z-Wave Serial API packets
