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       /*        $NetBSD: dlt.h,v 1.16 2015/03/31 21:42:16 christos Exp $        */
       /*-
        * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
        *        The Regents of the University of California.  All rights reserved.
+       *
        * This code is derived from the Stanford/CMU enet packet filter,
        * (net/enet.c) distributed as part of 4.3BSD, and code contributed
        * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
        * Berkeley Laboratory.
+       *
        * Redistribution and use in source and binary forms, with or without
        * modification, are permitted provided that the following conditions
        * are met:
        * 1. Redistributions of source code must retain the above copyright
        *    notice, this list of conditions and the following disclaimer.
        * 2. Redistributions in binary form must reproduce the above copyright
        *    notice, this list of conditions and the following disclaimer in the
        *    documentation and/or other materials provided with the distribution.
        * 3. All advertising materials mentioning features or use of this software
        *    must display the following acknowledgement:
        *      This product includes software developed by the University of
        *      California, Berkeley and its contributors.
        * 4. Neither the name of the University nor the names of its contributors
        *    may be used to endorse or promote products derived from this software
        *    without specific prior written permission.
+       *
        * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        * SUCH DAMAGE.
+       *
        *      @(#)bpf.h       7.1 (Berkeley) 5/7/91
+       *
        * @(#) Header: /tcpdump/master/libpcap/pcap/bpf.h,v 1.32 2008-12-23 20:13:29 guy Exp  (LBL)
        */
       #ifndef _NET_DLT_H_
       #define _NET_DLT_H_
       /*
        * Link-layer header type codes.
+       *
        * Do *NOT* add new values to this list without asking
        * "tcpdump-workers@lists.tcpdump.org" for a value.  Otherwise, you run
        * the risk of using a value that's already being used for some other
        * purpose, and of having tools that read libpcap-format captures not
        * being able to handle captures with your new DLT_ value, with no hope
        * that they will ever be changed to do so (as that would destroy their
        * ability to read captures using that value for that other purpose).
+       *
        * See
+       *
        *        http://www.tcpdump.org/linktypes.html
+       *
        * for detailed descriptions of some of these link-layer header types.
        */
       /*
        * These are the types that are the same on all platforms, and that
        * have been defined by <net/bpf.h> for ages.
        */
       #define DLT_NULL        0        /* BSD loopback encapsulation */
       #define DLT_EN10MB        1        /* Ethernet (10Mb) */
       #define DLT_EN3MB        2        /* Experimental Ethernet (3Mb) */
       #define DLT_AX25        3        /* Amateur Radio AX.25 */
       #define DLT_PRONET        4        /* Proteon ProNET Token Ring */
       #define DLT_CHAOS        5        /* Chaos */
       #define DLT_IEEE802        6        /* 802.5 Token Ring */
       #define DLT_ARCNET        7        /* ARCNET, with BSD-style header */
       #define DLT_SLIP        8        /* Serial Line IP */
       #define DLT_PPP                9        /* Point-to-point Protocol */
       #define DLT_FDDI        10        /* FDDI */
       /*
        * These are types that are different on some platforms, and that
        * have been defined by <net/bpf.h> for ages.  We use #ifdefs to
        * detect the BSDs that define them differently from the traditional
        * libpcap <net/bpf.h>
+       *
        * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS,
        * but I don't know what the right #define is for BSD/OS.
        */
       #define DLT_ATM_RFC1483        11        /* LLC-encapsulated ATM */
       #ifdef __OpenBSD__
       #define DLT_RAW                14        /* raw IP */
       #else
       #define DLT_RAW                12        /* raw IP */
       #endif
       /*
        * Given that the only OS that currently generates BSD/OS SLIP or PPP
        * is, well, BSD/OS, arguably everybody should have chosen its values
        * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they
        * didn't.  So it goes.
        */
       #if defined(__NetBSD__) || defined(__FreeBSD__)
       #ifndef DLT_SLIP_BSDOS
       #define DLT_SLIP_BSDOS        13        /* BSD/OS Serial Line IP */
       #define DLT_PPP_BSDOS        14        /* BSD/OS Point-to-point Protocol */
       #define DLT_HIPPI        15        /* HIPPI */
       #define DLT_HDLC        16        /* HDLC framing */
       #endif
       #else
       #define DLT_SLIP_BSDOS        15        /* BSD/OS Serial Line IP */
       #define DLT_PPP_BSDOS        16        /* BSD/OS Point-to-point Protocol */
       #endif
       /*
        * 17 was used for DLT_PFLOG in OpenBSD; it no longer is.
+       *
        * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG
        * as 117 so that pflog captures would use a link-layer header type
        * value that didn't collide with any other values.  On all
        * platforms other than OpenBSD, we defined DLT_PFLOG as 117,
        * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG.
+       *
        * OpenBSD eventually switched to using 117 for DLT_PFLOG as well.
+       *
        * Don't use 17 for anything else.
        */
       #if defined(__OpenBSD__) || defined(__NetBSD__)
       #define DLT_OLD_PFLOG        17
       #endif
       /*
        * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and
        * Mac OS X; don't use it for anything else.  (FreeBSD uses 121,
        * which collides with DLT_HHDLC, even though it doesn't use 18
        * for anything and doesn't appear to have ever used it for anything.)
+       *
        * We define it as 18 on those platforms; it is, unfortunately, used
        * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC
        * in general.  As the packet format for it, like that for
        * DLT_PFLOG, is not only OS-dependent but OS-version-dependent,
        * we don't support printing it in tcpdump except on OSes that
        * have the relevant header files, so it's not that useful on
        * other platforms.
        */
       #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__)
       #define DLT_PFSYNC        18
       #endif
       #define DLT_ATM_CLIP        19        /* Linux Classical-IP over ATM */
       /*
        * Apparently Redback uses this for its SmartEdge 400/800.  I hope
        * nobody else decided to use it, too.
        */
       #define DLT_REDBACK_SMARTEDGE        32
       /*
        * These values are defined by NetBSD; other platforms should refrain from
        * using them for other purposes, so that NetBSD savefiles with link
        * types of 50 or 51 can be read as this type on all platforms.
        */
       #define DLT_PPP_SERIAL        50        /* PPP over serial with HDLC encapsulation */
       #define DLT_PPP_ETHER        51        /* PPP over Ethernet */
       /*
        * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses
        * a link-layer type of 99 for the tcpdump it supplies.  The link-layer
        * header has 6 bytes of unknown data, something that appears to be an
        * Ethernet type, and 36 bytes that appear to be 0 in at least one capture
        * I've seen.
        */
       #define DLT_SYMANTEC_FIREWALL        99
       /*
        * Values between 100 and 103 are used in capture file headers as
        * link-layer header type LINKTYPE_ values corresponding to DLT_ types
        * that differ between platforms; don't use those values for new DLT_
        * new types.
        */
       /*
        * Values starting with 104 are used for newly-assigned link-layer
        * header type values; for those link-layer header types, the DLT_
        * value returned by pcap_datalink() and passed to pcap_open_dead(),
        * and the LINKTYPE_ value that appears in capture files, are the
        * same.
+       *
        * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is
        * the highest such value.
        */
       #define DLT_MATCHING_MIN        104
       /*
        * This value was defined by libpcap 0.5; platforms that have defined
        * it with a different value should define it here with that value -
        * a link type of 104 in a save file will be mapped to DLT_C_HDLC,
        * whatever value that happens to be, so programs will correctly
        * handle files with that link type regardless of the value of
        * DLT_C_HDLC.
+       *
        * The name DLT_C_HDLC was used by BSD/OS; we use that name for source
        * compatibility with programs written for BSD/OS.
+       *
        * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well,
        * for source compatibility with programs written for libpcap 0.5.
        */
       #define DLT_C_HDLC        104        /* Cisco HDLC */
       #define DLT_CHDLC        DLT_C_HDLC
       #define DLT_IEEE802_11        105        /* IEEE 802.11 wireless */
       /*
        * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW,
        * except when it isn't.  (I.e., sometimes it's just raw IP, and
        * sometimes it isn't.)  We currently handle it as DLT_LINUX_SLL,
        * so that we don't have to worry about the link-layer header.)
        */
       /*
        * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides
        * with other values.
        * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header
        * (DLCI, etc.).
        */
       #define DLT_FRELAY        107
       /*
        * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except
        * that the AF_ type in the link-layer header is in network byte order.
+       *
        * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so
        * we don't use 12 for it in OSes other than OpenBSD.
        */
       #ifdef __OpenBSD__
       #define DLT_LOOP        12
       #else
       #define DLT_LOOP        108
       #endif
       /*
        * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's
        * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other
        * than OpenBSD.
        */
       #ifdef __OpenBSD__
       #define DLT_ENC                13
       #else
       #define DLT_ENC                109
       #endif
       /*
        * Values between 110 and 112 are reserved for use in capture file headers
        * as link-layer types corresponding to DLT_ types that might differ
        * between platforms; don't use those values for new DLT_ types
        * other than the corresponding DLT_ types.
        */
       /*
        * This is for Linux cooked sockets.
        */
       #define DLT_LINUX_SLL        113
       /*
        * Apple LocalTalk hardware.
        */
       #define DLT_LTALK        114
       /*
        * Acorn Econet.
        */
       #define DLT_ECONET        115
       /*
        * Reserved for use with OpenBSD ipfilter.
        */
       #define DLT_IPFILTER        116
       /*
        * OpenBSD DLT_PFLOG.
        */
       #define DLT_PFLOG        117
       /*
        * Registered for Cisco-internal use.
        */
       #define DLT_CISCO_IOS        118
       /*
        * For 802.11 cards using the Prism II chips, with a link-layer
        * header including Prism monitor mode information plus an 802.11
        * header.
        */
       #define DLT_PRISM_HEADER        119
       /*
        * Reserved for Aironet 802.11 cards, with an Aironet link-layer header
        * (see Doug Ambrisko's FreeBSD patches).
        */
       #define DLT_AIRONET_HEADER        120
       /*
        * Sigh.
+       *
        * This was reserved for Siemens HiPath HDLC on 2002-01-25, as
        * requested by Tomas Kukosa.
+       *
        * On 2004-02-25, a FreeBSD checkin to sys/net/bpf.h was made that
        * assigned 121 as DLT_PFSYNC.  Its libpcap does DLT_ <-> LINKTYPE_
        * mapping, so it probably supports capturing on the pfsync device
        * but not saving the captured data to a pcap file.
+       *
        * OpenBSD, from which pf came, however, uses 18 for DLT_PFSYNC;
        * their libpcap does no DLT_ <-> LINKTYPE_ mapping, so it would
        * use 18 in pcap files as well.
+       *
        * NetBSD and DragonFly BSD also use 18 for DLT_PFSYNC; their
        * libpcaps do DLT_ <-> LINKTYPE_ mapping, and neither has an entry
        * for DLT_PFSYNC, so it might not be able to write out dump files
        * with 18 as the link-layer header type.  (Earlier versions might
        * not have done mapping, in which case they'd work the same way
        * OpenBSD does.)
+       *
        * Mac OS X defines it as 18, but doesn't appear to use it as of
        * Mac OS X 10.7.3.  Its libpcap does DLT_ <-> LINKTYPE_ mapping.
+       *
        * We'll define DLT_PFSYNC as 121 on FreeBSD and define it as 18 on
        * all other platforms.  We'll define DLT_HHDLC as 121 on everything
        * except for FreeBSD; anybody who wants to compile, on FreeBSD, code
        * that uses DLT_HHDLC is out of luck.
+       *
        * We'll define LINKTYPE_PFSYNC as 18, *even on FreeBSD*, and map
        * it, so that savefiles won't use 121 for PFSYNC - they'll all
        * use 18.  Code that uses pcap_datalink() to determine the link-layer
        * header type of a savefile won't, when built and run on FreeBSD,
        * be able to distinguish between LINKTYPE_PFSYNC and LINKTYPE_HHDLC
        * capture files; code that doesn't, such as the code in Wireshark,
        * will be able to distinguish between them.
        */
       #ifdef __FreeBSD__
       #define DLT_PFSYNC                121
       #else
       #define DLT_HHDLC                121
       #endif
       /*
        * This is for RFC 2625 IP-over-Fibre Channel.
+       *
        * This is not for use with raw Fibre Channel, where the link-layer
        * header starts with a Fibre Channel frame header; it's for IP-over-FC,
        * where the link-layer header starts with an RFC 2625 Network_Header
        * field.
        */
       #define DLT_IP_OVER_FC                122
       /*
        * This is for Full Frontal ATM on Solaris with SunATM, with a
        * pseudo-header followed by an AALn PDU.
+       *
        * There may be other forms of Full Frontal ATM on other OSes,
        * with different pseudo-headers.
+       *
        * If ATM software returns a pseudo-header with VPI/VCI information
        * (and, ideally, packet type information, e.g. signalling, ILMI,
        * LANE, LLC-multiplexed traffic, etc.), it should not use
        * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump
        * and the like don't have to infer the presence or absence of a
        * pseudo-header and the form of the pseudo-header.
        */
       #define DLT_SUNATM                123        /* Solaris+SunATM */
       /*
        * Reserved as per request from Kent Dahlgren <kent@praesum.com>
        * for private use.
        */
       #define DLT_RIO                 124     /* RapidIO */
       #define DLT_PCI_EXP             125     /* PCI Express */
       #define DLT_AURORA              126     /* Xilinx Aurora link layer */
       /*
        * Header for 802.11 plus a number of bits of link-layer information
        * including radio information, used by some recent BSD drivers as
        * well as the madwifi Atheros driver for Linux.
        */
       #define DLT_IEEE802_11_RADIO        127        /* 802.11 plus radiotap radio header */
       /*
        * Reserved for the TZSP encapsulation, as per request from
        * Chris Waters <chris.waters@networkchemistry.com>
        * TZSP is a generic encapsulation for any other link type,
        * which includes a means to include meta-information
        * with the packet, e.g. signal strength and channel
        * for 802.11 packets.
        */
       #define DLT_TZSP                128     /* Tazmen Sniffer Protocol */
       /*
        * BSD's ARCNET headers have the source host, destination host,
        * and type at the beginning of the packet; that's what's handed
        * up to userland via BPF.
+       *
        * Linux's ARCNET headers, however, have a 2-byte offset field
        * between the host IDs and the type; that's what's handed up
        * to userland via PF_PACKET sockets.
+       *
        * We therefore have to have separate DLT_ values for them.
        */
       #define DLT_ARCNET_LINUX        129        /* ARCNET */
       /*
        * Juniper-private data link types, as per request from
        * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
        * for passing on chassis-internal metainformation such as
        * QOS profiles, etc..
        */
       #define DLT_JUNIPER_MLPPP       130
       #define DLT_JUNIPER_MLFR        131
       #define DLT_JUNIPER_ES          132
       #define DLT_JUNIPER_GGSN        133
       #define DLT_JUNIPER_MFR         134
       #define DLT_JUNIPER_ATM2        135
       #define DLT_JUNIPER_SERVICES    136
       #define DLT_JUNIPER_ATM1        137
       /*
        * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund
        * <dieter@apple.com>.  The header that's presented is an Ethernet-like
        * header:
+       *
        *        #define FIREWIRE_EUI64_LEN        8
        *        struct firewire_header {
        *                u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
        *                u_char  firewire_shost[FIREWIRE_EUI64_LEN];
        *                u_short firewire_type;
        *        };
+       *
        * with "firewire_type" being an Ethernet type value, rather than,
        * for example, raw GASP frames being handed up.
        */
       #define DLT_APPLE_IP_OVER_IEEE1394        138
       /*
        * Various SS7 encapsulations, as per a request from Jeff Morriss
        * <jeff.morriss[AT]ulticom.com> and subsequent discussions.
        */
       #define DLT_MTP2_WITH_PHDR        139        /* pseudo-header with various info, followed by MTP2 */
       #define DLT_MTP2                140        /* MTP2, without pseudo-header */
       #define DLT_MTP3                141        /* MTP3, without pseudo-header or MTP2 */
       #define DLT_SCCP                142        /* SCCP, without pseudo-header or MTP2 or MTP3 */
       /*
        * DOCSIS MAC frames.
        */
       #define DLT_DOCSIS                143
       /*
        * Linux-IrDA packets. Protocol defined at http://www.irda.org.
        * Those packets include IrLAP headers and above (IrLMP...), but
        * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy
        * framing can be handled by the hardware and depend on the bitrate.
        * This is exactly the format you would get capturing on a Linux-IrDA
        * interface (irdaX), but not on a raw serial port.
        * Note the capture is done in "Linux-cooked" mode, so each packet include
        * a fake packet header (struct sll_header). This is because IrDA packet
        * decoding is dependant on the direction of the packet (incomming or
        * outgoing).
        * When/if other platform implement IrDA capture, we may revisit the
        * issue and define a real DLT_IRDA...
        * Jean II
        */
       #define DLT_LINUX_IRDA                144
       /*
        * Reserved for IBM SP switch and IBM Next Federation switch.
        */
       #define DLT_IBM_SP                145
       #define DLT_IBM_SN                146
       /*
        * Reserved for private use.  If you have some link-layer header type
        * that you want to use within your organization, with the capture files
        * using that link-layer header type not ever be sent outside your
        * organization, you can use these values.
+       *
        * No libpcap release will use these for any purpose, nor will any
        * tcpdump release use them, either.
+       *
        * Do *NOT* use these in capture files that you expect anybody not using
        * your private versions of capture-file-reading tools to read; in
        * particular, do *NOT* use them in products, otherwise you may find that
        * people won't be able to use tcpdump, or snort, or Ethereal, or... to
        * read capture files from your firewall/intrusion detection/traffic
        * monitoring/etc. appliance, or whatever product uses that DLT_ value,
        * and you may also find that the developers of those applications will
        * not accept patches to let them read those files.
+       *
        * Also, do not use them if somebody might send you a capture using them
        * for *their* private type and tools using them for *your* private type
        * would have to read them.
+       *
        * Instead, ask "tcpdump-workers@lists.tcpdump.org" for a new DLT_ value,
        * as per the comment above, and use the type you're given.
        */
       #define DLT_USER0                147
       #define DLT_USER1                148
       #define DLT_USER2                149
       #define DLT_USER3                150
       #define DLT_USER4                151
       #define DLT_USER5                152
       #define DLT_USER6                153
       #define DLT_USER7                154
       #define DLT_USER8                155
       #define DLT_USER9                156
       #define DLT_USER10                157
       #define DLT_USER11                158
       #define DLT_USER12                159
       #define DLT_USER13                160
       #define DLT_USER14                161
       #define DLT_USER15                162
       /*
        * For future use with 802.11 captures - defined by AbsoluteValue
        * Systems to store a number of bits of link-layer information
        * including radio information:
+       *
        *        http://www.shaftnet.org/~pizza/software/capturefrm.txt
+       *
        * but it might be used by some non-AVS drivers now or in the
        * future.
        */
       #define DLT_IEEE802_11_RADIO_AVS 163        /* 802.11 plus AVS radio header */
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
        * for passing on chassis-internal metainformation such as
        * QOS profiles, etc..
        */
       #define DLT_JUNIPER_MONITOR     164
       /*
        * BACnet MS/TP frames.
        */
       #define DLT_BACNET_MS_TP        165
       /*
        * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>.
+       *
        * This is used in some OSes to allow a kernel socket filter to distinguish
        * between incoming and outgoing packets, on a socket intended to
        * supply pppd with outgoing packets so it can do dial-on-demand and
        * hangup-on-lack-of-demand; incoming packets are filtered out so they
        * don't cause pppd to hold the connection up (you don't want random
        * input packets such as port scans, packets from old lost connections,
        * etc. to force the connection to stay up).
+       *
        * The first byte of the PPP header (0xff03) is modified to accomodate
        * the direction - 0x00 = IN, 0x01 = OUT.
        */
       #define DLT_PPP_PPPD                166
       /*
        * Names for backwards compatibility with older versions of some PPP
        * software; new software should use DLT_PPP_PPPD.
        */
       #define DLT_PPP_WITH_DIRECTION        DLT_PPP_PPPD
       #define DLT_LINUX_PPP_WITHDIRECTION        DLT_PPP_PPPD
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
        * for passing on chassis-internal metainformation such as
        * QOS profiles, cookies, etc..
        */
       #define DLT_JUNIPER_PPPOE       167
       #define DLT_JUNIPER_PPPOE_ATM   168
       #define DLT_GPRS_LLC                169        /* GPRS LLC */
       #define DLT_GPF_T                170        /* GPF-T (ITU-T G.7041/Y.1303) */
       #define DLT_GPF_F                171        /* GPF-F (ITU-T G.7041/Y.1303) */
       /*
        * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line
        * monitoring equipment.
        */
       #define DLT_GCOM_T1E1                172
       #define DLT_GCOM_SERIAL                173
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.  The DLT_ is used
        * for internal communication to Physical Interface Cards (PIC)
        */
       #define DLT_JUNIPER_PIC_PEER    174
       /*
        * Link types requested by Gregor Maier <gregor@endace.com> of Endace
        * Measurement Systems.  They add an ERF header (see
        * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
        * the link-layer header.
        */
       #define DLT_ERF_ETH                175        /* Ethernet */
       #define DLT_ERF_POS                176        /* Packet-over-SONET */
       /*
        * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD
        * for vISDN (http://www.orlandi.com/visdn/).  Its link-layer header
        * includes additional information before the LAPD header, so it's
        * not necessarily a generic LAPD header.
        */
       #define DLT_LINUX_LAPD                177
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.
        * The DLT_ are used for prepending meta-information
        * like interface index, interface name
        * before standard Ethernet, PPP, Frelay & C-HDLC Frames
        */
       #define DLT_JUNIPER_ETHER       178
       #define DLT_JUNIPER_PPP         179
       #define DLT_JUNIPER_FRELAY      180
       #define DLT_JUNIPER_CHDLC       181
       /*
        * Multi Link Frame Relay (FRF.16)
        */
       #define DLT_MFR                 182
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.
        * The DLT_ is used for internal communication with a
        * voice Adapter Card (PIC)
        */
       #define DLT_JUNIPER_VP          183
       /*
        * Arinc 429 frames.
        * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
        * Every frame contains a 32bit A429 label.
        * More documentation on Arinc 429 can be found at
        * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf
        */
       #define DLT_A429                184
       /*
        * Arinc 653 Interpartition Communication messages.
        * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
        * Please refer to the A653-1 standard for more information.
        */
       #define DLT_A653_ICM            185
       /*
        * USB packets, beginning with a USB setup header; requested by
        * Paolo Abeni <paolo.abeni@email.it>.
        */
       #define DLT_USB                        186
       /*
        * Bluetooth HCI UART transport layer (part H:4); requested by
        * Paolo Abeni.
        */
       #define DLT_BLUETOOTH_HCI_H4        187
       /*
        * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz
        * <cruz_petagay@bah.com>.
        */
       #define DLT_IEEE802_16_MAC_CPS        188
       /*
        * USB packets, beginning with a Linux USB header; requested by
        * Paolo Abeni <paolo.abeni@email.it>.
        */
       #define DLT_USB_LINUX                189
       /*
        * Controller Area Network (CAN) v. 2.0B packets.
        * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
        * Used to dump CAN packets coming from a CAN Vector board.
        * More documentation on the CAN v2.0B frames can be found at
        * http://www.can-cia.org/downloads/?269
        */
       #define DLT_CAN20B              190
       /*
        * IEEE 802.15.4, with address fields padded, as is done by Linux
        * drivers; requested by Juergen Schimmer.
        */
       #define DLT_IEEE802_15_4_LINUX        191
       /*
        * Per Packet Information encapsulated packets.
        * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
        */
       #define DLT_PPI                        192
       /*
        * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header;
        * requested by Charles Clancy.
        */
       #define DLT_IEEE802_16_MAC_CPS_RADIO        193
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.
        * The DLT_ is used for internal communication with a
        * integrated service module (ISM).
        */
       #define DLT_JUNIPER_ISM         194
       /*
        * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
        * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>.
        * For this one, we expect the FCS to be present at the end of the frame;
        * if the frame has no FCS, DLT_IEEE802_15_4_NOFCS should be used.
        */
       #define DLT_IEEE802_15_4        195
       /*
        * Various link-layer types, with a pseudo-header, for SITA
        * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com).
        */
       #define DLT_SITA                196
       /*
        * Various link-layer types, with a pseudo-header, for Endace DAG cards;
        * encapsulates Endace ERF records.  Requested by Stephen Donnelly
        * <stephen@endace.com>.
        */
       #define DLT_ERF                        197
       /*
        * Special header prepended to Ethernet packets when capturing from a
        * u10 Networks board.  Requested by Phil Mulholland
        * <phil@u10networks.com>.
        */
       #define DLT_RAIF1                198
       /*
        * IPMB packet for IPMI, beginning with the I2C slave address, followed
        * by the netFn and LUN, etc..  Requested by Chanthy Toeung
        * <chanthy.toeung@ca.kontron.com>.
        */
       #define DLT_IPMB                199
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.
        * The DLT_ is used for capturing data on a secure tunnel interface.
        */
       #define DLT_JUNIPER_ST          200
       /*
        * Bluetooth HCI UART transport layer (part H:4), with pseudo-header
        * that includes direction information; requested by Paolo Abeni.
        */
       #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR        201
       /*
        * AX.25 packet with a 1-byte KISS header; see
+       *
        *        http://www.ax25.net/kiss.htm
+       *
        * as per Richard Stearn <richard@rns-stearn.demon.co.uk>.
        */
       #define DLT_AX25_KISS                202
       /*
        * LAPD packets from an ISDN channel, starting with the address field,
        * with no pseudo-header.
        * Requested by Varuna De Silva <varunax@gmail.com>.
        */
       #define DLT_LAPD                203
       /*
        * Variants of various link-layer headers, with a one-byte direction
        * pseudo-header prepended - zero means "received by this host",
        * non-zero (any non-zero value) means "sent by this host" - as per
        * Will Barker <w.barker@zen.co.uk>.
        */
       #define DLT_PPP_WITH_DIR        204        /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */
       #define DLT_C_HDLC_WITH_DIR        205        /* Cisco HDLC */
       #define DLT_FRELAY_WITH_DIR        206        /* Frame Relay */
       #define DLT_LAPB_WITH_DIR        207        /* LAPB */
       /*
        * 208 is reserved for an as-yet-unspecified proprietary link-layer
        * type, as requested by Will Barker.
        */
       /*
        * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman
        * <avn@pigeonpoint.com>.
        */
       #define DLT_IPMB_LINUX                209
       /*
        * FlexRay automotive bus - http://www.flexray.com/ - as requested
        * by Hannes Kaelber <hannes.kaelber@x2e.de>.
        */
       #define DLT_FLEXRAY                210
       /*
        * Media Oriented Systems Transport (MOST) bus for multimedia
        * transport - http://www.mostcooperation.com/ - as requested
        * by Hannes Kaelber <hannes.kaelber@x2e.de>.
        */
       #define DLT_MOST                211
       /*
        * Local Interconnect Network (LIN) bus for vehicle networks -
        * http://www.lin-subbus.org/ - as requested by Hannes Kaelber
        * <hannes.kaelber@x2e.de>.
        */
       #define DLT_LIN                        212
       /*
        * X2E-private data link type used for serial line capture,
        * as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
        */
       #define DLT_X2E_SERIAL                213
       /*
        * X2E-private data link type used for the Xoraya data logger
        * family, as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
        */
       #define DLT_X2E_XORAYA                214
       /*
        * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
        * nothing), but with the PHY-level data for non-ASK PHYs (4 octets
        * of 0 as preamble, one octet of SFD, one octet of frame length+
        * reserved bit, and then the MAC-layer data, starting with the
        * frame control field).
+       *
        * Requested by Max Filippov <jcmvbkbc@gmail.com>.
        */
       #define DLT_IEEE802_15_4_NONASK_PHY        215
       /*
        * David Gibson <david@gibson.dropbear.id.au> requested this for
        * captures from the Linux kernel /dev/input/eventN devices. This
        * is used to communicate keystrokes and mouse movements from the
        * Linux kernel to display systems, such as Xorg.
        */
       #define DLT_LINUX_EVDEV                216
       /*
        * GSM Um and Abis interfaces, preceded by a "gsmtap" header.
+       *
        * Requested by Harald Welte <laforge@gnumonks.org>.
        */
       #define DLT_GSMTAP_UM                217
       #define DLT_GSMTAP_ABIS                218
       /*
        * MPLS, with an MPLS label as the link-layer header.
        * Requested by Michele Marchetto <michele@openbsd.org> on behalf
        * of OpenBSD.
        */
       #define DLT_MPLS                219
       /*
        * USB packets, beginning with a Linux USB header, with the USB header
        * padded to 64 bytes; required for memory-mapped access.
        */
       #define DLT_USB_LINUX_MMAPPED        220
       /*
        * DECT packets, with a pseudo-header; requested by
        * Matthias Wenzel <tcpdump@mazzoo.de>.
        */
       #define DLT_DECT                221
       /*
        * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <eric.lidwa-1@nasa.gov>
        * Date: Mon, 11 May 2009 11:18:30 -0500
+       *
        * DLT_AOS. We need it for AOS Space Data Link Protocol.
        *   I have already written dissectors for but need an OK from
        *   legal before I can submit a patch.
+       *
        */
       #define DLT_AOS                 222
       /*
        * Wireless HART (Highway Addressable Remote Transducer)
        * From the HART Communication Foundation
        * IES/PAS 62591
+       *
        * Requested by Sam Roberts <vieuxtech@gmail.com>.
        */
       #define DLT_WIHART                223
       /*
        * Fibre Channel FC-2 frames, beginning with a Frame_Header.
        * Requested by Kahou Lei <kahou82@gmail.com>.
        */
       #define DLT_FC_2                224
       /*
        * Fibre Channel FC-2 frames, beginning with an encoding of the
        * SOF, and ending with an encoding of the EOF.
+       *
        * The encodings represent the frame delimiters as 4-byte sequences
        * representing the corresponding ordered sets, with K28.5
        * represented as 0xBC, and the D symbols as the corresponding
        * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2,
        * is represented as 0xBC 0xB5 0x55 0x55.
+       *
        * Requested by Kahou Lei <kahou82@gmail.com>.
        */
       #define DLT_FC_2_WITH_FRAME_DELIMS        225
       /*
        * Solaris ipnet pseudo-header; requested by Darren Reed <Darren.Reed@Sun.COM>.
+       *
        * The pseudo-header starts with a one-byte version number; for version 2,
        * the pseudo-header is:
+       *
        * struct dl_ipnetinfo {
        *     u_int8_t   dli_version;
        *     u_int8_t   dli_family;
        *     u_int16_t  dli_htype;
        *     u_int32_t  dli_pktlen;
        *     u_int32_t  dli_ifindex;
        *     u_int32_t  dli_grifindex;
        *     u_int32_t  dli_zsrc;
        *     u_int32_t  dli_zdst;
        * };
+       *
        * dli_version is 2 for the current version of the pseudo-header.
+       *
        * dli_family is a Solaris address family value, so it's 2 for IPv4
        * and 26 for IPv6.
+       *
        * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing
        * packets, and 2 for packets arriving from another zone on the same
        * machine.
+       *
        * dli_pktlen is the length of the packet data following the pseudo-header
        * (so the captured length minus dli_pktlen is the length of the
        * pseudo-header, assuming the entire pseudo-header was captured).
+       *
        * dli_ifindex is the interface index of the interface on which the
        * packet arrived.
+       *
        * dli_grifindex is the group interface index number (for IPMP interfaces).
+       *
        * dli_zsrc is the zone identifier for the source of the packet.
+       *
        * dli_zdst is the zone identifier for the destination of the packet.
+       *
        * A zone number of 0 is the global zone; a zone number of 0xffffffff
        * means that the packet arrived from another host on the network, not
        * from another zone on the same machine.
+       *
        * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates
        * which of those it is.
        */
       #define DLT_IPNET                226
       /*
        * CAN (Controller Area Network) frames, with a pseudo-header as supplied
        * by Linux SocketCAN.  See Documentation/networking/can.txt in the Linux
        * source.
+       *
        * Requested by Felix Obenhuber <felix@obenhuber.de>.
        */
       #define DLT_CAN_SOCKETCAN        227
       /*
        * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies
        * whether it's v4 or v6.  Requested by Darren Reed <Darren.Reed@Sun.COM>.
        */
       #define DLT_IPV4                228
       #define DLT_IPV6                229
       /*
        * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
        * nothing), and with no FCS at the end of the frame; requested by
        * Jon Smirl <jonsmirl@gmail.com>.
        */
       #define DLT_IEEE802_15_4_NOFCS        230
       /*
        * Raw D-Bus:
+       *
        *        http://www.freedesktop.org/wiki/Software/dbus
+       *
        * messages:
+       *
        *        http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages
+       *
        * starting with the endianness flag, followed by the message type, etc.,
        * but without the authentication handshake before the message sequence:
+       *
        *        http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol
+       *
        * Requested by Martin Vidner <martin@vidner.net>.
        */
       #define DLT_DBUS                231
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.
        */
       #define DLT_JUNIPER_VS                        232
       #define DLT_JUNIPER_SRX_E2E                233
       #define DLT_JUNIPER_FIBRECHANNEL        234
       /*
        * DVB-CI (DVB Common Interface for communication between a PC Card
        * module and a DVB receiver).  See
+       *
        *        http://www.kaiser.cx/pcap-dvbci.html
+       *
        * for the specification.
+       *
        * Requested by Martin Kaiser <martin@kaiser.cx>.
        */
       #define DLT_DVB_CI                235
       /*
        * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but
        * *not* the same as, 27.010).  Requested by Hans-Christoph Schemmel
        * <hans-christoph.schemmel@cinterion.com>.
        */
       #define DLT_MUX27010                236
       /*
        * STANAG 5066 D_PDUs.  Requested by M. Baris Demiray
        * <barisdemiray@gmail.com>.
        */
       #define DLT_STANAG_5066_D_PDU        237
       /*
        * Juniper-private data link type, as per request from
        * Hannes Gredler <hannes@juniper.net>.
        */
       #define DLT_JUNIPER_ATM_CEMIC        238
       /*
        * NetFilter LOG messages
        * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets)
+       *
        * Requested by Jakub Zawadzki <darkjames-ws@darkjames.pl>
        */
       #define DLT_NFLOG                239
       /*
        * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
        * for Ethernet packets with a 4-byte pseudo-header and always
        * with the payload including the FCS, as supplied by their
        * netANALYZER hardware and software.
+       *
        * Requested by Holger P. Frommer <HPfrommer@hilscher.com>
        */
       #define DLT_NETANALYZER                240
       /*
        * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
        * for Ethernet packets with a 4-byte pseudo-header and FCS and
        * with the Ethernet header preceded by 7 bytes of preamble and
        * 1 byte of SFD, as supplied by their netANALYZER hardware and
        * software.
+       *
        * Requested by Holger P. Frommer <HPfrommer@hilscher.com>
        */
       #define DLT_NETANALYZER_TRANSPARENT        241
       /*
        * IP-over-Infiniband, as specified by RFC 4391.
+       *
        * Requested by Petr Sumbera <petr.sumbera@oracle.com>.
        */
       #define DLT_IPOIB                242
       /*
        * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0).
+       *
        * Requested by Guy Martin <gmsoft@tuxicoman.be>.
        */
       #define DLT_MPEG_2_TS                243
       /*
        * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as
        * used by their ng40 protocol tester.
+       *
        * Requested by Jens Grimmer <jens.grimmer@ng4t.com>.
        */
       #define DLT_NG40                244
       /*
        * Pseudo-header giving adapter number and flags, followed by an NFC
        * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU,
        * as specified by NFC Forum Logical Link Control Protocol Technical
        * Specification LLCP 1.1.
+       *
        * Requested by Mike Wakerly <mikey@google.com>.
        */
       #define DLT_NFC_LLCP                245
       /*
        * 245 is used as LINKTYPE_PFSYNC; do not use it for any other purpose.
+       *
        * DLT_PFSYNC has different values on different platforms, and all of
        * them collide with something used elsewhere.  On platforms that
        * don't already define it, define it as 245.
        */
       #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__) && !defined(__APPLE__)
       #define DLT_PFSYNC                246
       #endif
       /*
        * Raw InfiniBand packets, starting with the Local Routing Header.
+       *
        * Requested by Oren Kladnitsky <orenk@mellanox.com>.
        */
       #define DLT_INFINIBAND                247
       /*
        * SCTP, with no lower-level protocols (i.e., no IPv4 or IPv6).
+       *
        * Requested by Michael Tuexen <Michael.Tuexen@lurchi.franken.de>.
        */
       #define DLT_SCTP                248
       /*
        * USB packets, beginning with a USBPcap header.
+       *
        * Requested by Tomasz Mon <desowin@gmail.com>
        */
       #define DLT_USBPCAP                249
       /*
        * Schweitzer Engineering Laboratories "RTAC" product serial-line
        * packets.
+       *
        * Requested by Chris Bontje <chris_bontje@selinc.com>.
        */
       #define DLT_RTAC_SERIAL                250
       /*
        * Bluetooth Low Energy air interface link-layer packets.
+       *
        * Requested by Mike Kershaw <dragorn@kismetwireless.net>.
        */
       #define DLT_BLUETOOTH_LE_LL        251
       /*
        * DLT type for upper-protocol layer PDU saves from wireshark.
+       *
        * the actual contents are determined by two TAGs stored with each
        * packet:
        *   EXP_PDU_TAG_LINKTYPE          the link type (LINKTYPE_ value) of the
        *                                   original packet.
+       *
        *   EXP_PDU_TAG_PROTO_NAME        the name of the wireshark dissector
        *                                    that can make sense of the data stored.
        */
       #define DLT_WIRESHARK_UPPER_PDU        252
       /*
        * DLT type for the netlink protocol (nlmon devices).
        */
       #define DLT_NETLINK                253
       /*
        * Bluetooth Linux Monitor headers for the BlueZ stack.
        */
       #define DLT_BLUETOOTH_LINUX_MONITOR        254
       /*
        * Bluetooth Basic Rate/Enhanced Data Rate baseband packets, as
        * captured by Ubertooth.
        */
       #define DLT_BLUETOOTH_BREDR_BB        255
       /*
        * Bluetooth Low Energy link layer packets, as captured by Ubertooth.
        */
       #define DLT_BLUETOOTH_LE_LL_WITH_PHDR        256
       /*
        * PROFIBUS data link layer.
        */
       #define DLT_PROFIBUS_DL                257
       /*
        * Apple's DLT_PKTAP headers.
+       *
        * Sadly, the folks at Apple either had no clue that the DLT_USERn values
        * are for internal use within an organization and partners only, and
        * didn't know that the right way to get a link-layer header type is to
        * ask tcpdump.org for one, or knew and didn't care, so they just
        * used DLT_USER2, which causes problems for everything except for
        * their version of tcpdump.
+       *
        * So I'll just give them one; hopefully this will show up in a
        * libpcap release in time for them to get this into 10.10 Big Sur
        * or whatever Mavericks' successor is called.  LINKTYPE_PKTAP
        * will be 258 *even on OS X*; that is *intentional*, so that
        * PKTAP files look the same on *all* OSes (different OSes can have
        * different numerical values for a given DLT_, but *MUST NOT* have
        * different values for what goes in a file, as files can be moved
        * between OSes!).
+       *
        * When capturing, on a system with a Darwin-based OS, on a device
        * that returns 149 (DLT_USER2 and Apple's DLT_PKTAP) with this
        * version of libpcap, the DLT_ value for the pcap_t  will be DLT_PKTAP,
        * and that will continue to be DLT_USER2 on Darwin-based OSes. That way,
        * binary compatibility with Mavericks is preserved for programs using
        * this version of libpcap.  This does mean that if you were using
        * DLT_USER2 for some capture device on OS X, you can't do so with
        * this version of libpcap, just as you can't with Apple's libpcap -
        * on OS X, they define DLT_PKTAP to be DLT_USER2, so programs won't
        * be able to distinguish between PKTAP and whatever you were using
        * DLT_USER2 for.
+       *
        * If the program saves the capture to a file using this version of
        * libpcap's pcap_dump code, the LINKTYPE_ value in the file will be
        * LINKTYPE_PKTAP, which will be 258, even on Darwin-based OSes.
        * That way, the file will *not* be a DLT_USER2 file.  That means
        * that the latest version of tcpdump, when built with this version
        * of libpcap, and sufficiently recent versions of Wireshark will
        * be able to read those files and interpret them correctly; however,
        * Apple's version of tcpdump in OS X 10.9 won't be able to handle
        * them.  (Hopefully, Apple will pick up this version of libpcap,
        * and the corresponding version of tcpdump, so that tcpdump will
        * be able to handle the old LINKTYPE_USER2 captures *and* the new
        * LINKTYPE_PKTAP captures.)
        */
       #ifdef __APPLE__
       #define DLT_PKTAP        DLT_USER2
       #else
       #define DLT_PKTAP        258
       #endif
       /*
        * Ethernet packets preceded by a header giving the last 6 octets
        * of the preamble specified by 802.3-2012 Clause 65, section
        * 65.1.3.2 "Transmit".
        */
       #define DLT_EPON        259
       /*
        * IPMI trace packets, as specified by Table 3-20 "Trace Data Block Format"
        * in the PICMG HPM.2 specification.
        */
       #define DLT_IPMI_HPM_2        260
       /*
        * per  Joshua Wright <jwright@hasborg.com>, formats for Zwave captures.
        */
       #define DLT_ZWAVE_R1_R2  261
       #define DLT_ZWAVE_R3     262
       /*
        * per Steve Karg <skarg@users.sourceforge.net>, formats for Wattstopper
        * Digital Lighting Management room bus serial protocol captures.
        */
       #define DLT_WATTSTOPPER_DLM     263
       #define DLT_MATCHING_MAX        263        /* highest value in the "matching" range */
       /*
        * DLT and savefile link type values are split into a class and
        * a member of that class.  A class value of 0 indicates a regular
        * DLT_/LINKTYPE_ value.
        */
       #define DLT_CLASS(x)                ((x) & 0x03ff0000)
       /*
        * NetBSD-specific generic "raw" link type.  The class value indicates
        * that this is the generic raw type, and the lower 16 bits are the
        * address family we're dealing with.  Those values are NetBSD-specific;
        * do not assume that they correspond to AF_ values for your operating
        * system.
        */
       #define        DLT_CLASS_NETBSD_RAWAF        0x02240000
       #define        DLT_NETBSD_RAWAF(af)        (DLT_CLASS_NETBSD_RAWAF | (af))
       #define        DLT_NETBSD_RAWAF_AF(x)        ((x) & 0x0000ffff)
       #define        DLT_IS_NETBSD_RAWAF(x)        (DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF)
       #endif /* !_NET_DLT_H_ */

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