path: root/CHANGES

Sunday September 3, 2017 denis@ovsienko.info
  Summary for 4.9.2 tcpdump release
    Do not use getprotobynumber() for protocol name resolution.  Do not do
      any protocol name resolution if -n is specified.
    Improve errors detection in the test scripts.
    Fix a segfault with OpenSSL 1.1 and improve OpenSSL usage.
    Clean up IS-IS printing.
    Fix buffer overflow vulnerabilities:
      CVE-2017-11543 (SLIP)
      CVE-2017-13011 (bittok2str_internal)
    Fix infinite loop vulnerabilities:
      CVE-2017-12989 (RESP)
      CVE-2017-12990 (ISAKMP)
      CVE-2017-12995 (DNS)
      CVE-2017-12997 (LLDP)
    Fix buffer over-read vulnerabilities:
      CVE-2017-11541 (safeputs)
      CVE-2017-11542 (PIMv1)
      CVE-2017-12893 (SMB/CIFS)
      CVE-2017-12894 (lookup_bytestring)
      CVE-2017-12895 (ICMP)
      CVE-2017-12896 (ISAKMP)
      CVE-2017-12897 (ISO CLNS)
      CVE-2017-12898 (NFS)
      CVE-2017-12899 (DECnet)
      CVE-2017-12900 (tok2strbuf)
      CVE-2017-12901 (EIGRP)
      CVE-2017-12902 (Zephyr)
      CVE-2017-12985 (IPv6)
      CVE-2017-12986 (IPv6 routing headers)
      CVE-2017-12987 (IEEE 802.11)
      CVE-2017-12988 (telnet)
      CVE-2017-12991 (BGP)
      CVE-2017-12992 (RIPng)
      CVE-2017-12993 (Juniper)
      CVE-2017-11542 (PIMv1)
      CVE-2017-11541 (safeputs)
      CVE-2017-12994 (BGP)
      CVE-2017-12996 (PIMv2)
      CVE-2017-12998 (ISO IS-IS)
      CVE-2017-12999 (ISO IS-IS)
      CVE-2017-13000 (IEEE 802.15.4)
      CVE-2017-13001 (NFS)
      CVE-2017-13002 (AODV)
      CVE-2017-13003 (LMP)
      CVE-2017-13004 (Juniper)
      CVE-2017-13005 (NFS)
      CVE-2017-13006 (L2TP)
      CVE-2017-13007 (Apple PKTAP)
      CVE-2017-13008 (IEEE 802.11)
      CVE-2017-13009 (IPv6 mobility)
      CVE-2017-13010 (BEEP)
      CVE-2017-13012 (ICMP)
      CVE-2017-13013 (ARP)
      CVE-2017-13014 (White Board)
      CVE-2017-13015 (EAP)
      CVE-2017-11543 (SLIP)
      CVE-2017-13016 (ISO ES-IS)
      CVE-2017-13017 (DHCPv6)
      CVE-2017-13018 (PGM)
      CVE-2017-13019 (PGM)
      CVE-2017-13020 (VTP)
      CVE-2017-13021 (ICMPv6)
      CVE-2017-13022 (IP)
      CVE-2017-13023 (IPv6 mobility)
      CVE-2017-13024 (IPv6 mobility)
      CVE-2017-13025 (IPv6 mobility)
      CVE-2017-13026 (ISO IS-IS)
      CVE-2017-13027 (LLDP)
      CVE-2017-13028 (BOOTP)
      CVE-2017-13029 (PPP)
      CVE-2017-13030 (PIM)
      CVE-2017-13031 (IPv6 fragmentation header)
      CVE-2017-13032 (RADIUS)
      CVE-2017-13033 (VTP)
      CVE-2017-13034 (PGM)
      CVE-2017-13035 (ISO IS-IS)
      CVE-2017-13036 (OSPFv3)
      CVE-2017-13037 (IP)
      CVE-2017-13038 (PPP)
      CVE-2017-13039 (ISAKMP)
      CVE-2017-13040 (MPTCP)
      CVE-2017-13041 (ICMPv6)
      CVE-2017-13042 (HNCP)
      CVE-2017-13043 (BGP)
      CVE-2017-13044 (HNCP)
      CVE-2017-13045 (VQP)
      CVE-2017-13046 (BGP)
      CVE-2017-13047 (ISO ES-IS)
      CVE-2017-13048 (RSVP)
      CVE-2017-13049 (Rx)
      CVE-2017-13050 (RPKI-Router)
      CVE-2017-13051 (RSVP)
      CVE-2017-13052 (CFM)
      CVE-2017-13053 (BGP)
      CVE-2017-13054 (LLDP)
      CVE-2017-13055 (ISO IS-IS)
      CVE-2017-13687 (Cisco HDLC)
      CVE-2017-13688 (OLSR)
      CVE-2017-13689 (IKEv1)
      CVE-2017-13690 (IKEv2)
      CVE-2017-13725 (IPv6 routing headers)

Sunday July 23, 2017 denis@ovsienko.info
  Summary for 4.9.1 tcpdump release
    CVE-2017-11108/Fix bounds checking for STP.
    Make assorted documentation updates and fix a few typos in tcpdump output.
    Fixup -C for file size >2GB (GH #488).
    Show AddressSanitizer presence in version output.
    Fix a bug in test scripts (exposed in GH #613).
    On FreeBSD adjust Capsicum capabilities for netmap.
    On Linux fix a use-after-free when the requested interface does not exist.

Wednesday January 18, 2017 devel.fx.lebail@orange.fr
  Summary for 4.9.0 tcpdump release
    General updates:
    Fix some heap overflows found with American Fuzzy Lop by Hanno Boeck and others
        (More information in the log with CVE-2016-* and CVE-2017-*)
    Change the way protocols print link-layer addresses (Fix heap overflows
        in CALM-FAST and GeoNetworking printers)
    Pass correct caplen value to ether_print() and some other functions
    Fix lookup_nsap() to match what isonsap_string() expects
    Clean up relative time stamp printing (Fix an array overflow)
    Fix some alignment issues with GCC on Solaris 10 SPARC
    Add some ND_TTEST_/ND_TCHECK_ macros to simplify writing bounds checks
    Add a fn_printztn() which returns the number of bytes processed
    Add nd_init() and nd_cleanup() functions. Improve libsmi support
    Add CONTRIBUTING file
    Add a summary comment in all printers
    Compile with more warning options in devel mode if supported (-Wcast-qual, ...)
    Fix some leaks found by Valgrind/Memcheck
    Fix a bunch of de-constifications
    Squelch some Coverity warnings and some compiler warnings
    Update Coverity and Travis-CI setup
    Update Visual Studio files

    Frontend:
    Fix capsicum support to work with zerocopy buffers in bpf
    Try opening interfaces by name first, then by name-as-index
    Work around pcap_create() failures fetching time stamp type lists
    Fix a segmentation fault with 'tcpdump -J'
    Improve addrtostr6() bounds checking
    Add exit_tcpdump() function
    Don't drop CAP_SYS_CHROOT before chrooting
    Fixes issue where statistics not reported when -G and -W options used

    Updated printers:
    802.11: Beginnings of 11ac radiotap support
    802.11: Check the Protected bit for management frames
    802.11: Do bounds checking on last_presentp before dereferencing it (Fix a heap overflow)
    802.11: Fix the radiotap printer to handle the special bits correctly
    802.11: If we have the MCS field, it's 11n
    802.11: Only print unknown frame type or subtype messages once
    802.11: Radiotap dBm values get printed as dB; Update a test output accordingly
    802.11: Source and destination addresses were backwards
    AH: Add a bounds check
    AH: Report to our caller that dissection failed if a bounds check fails
    AP1394: Print src > dst, not dst > src
    ARP: Don't assume the target hardware address is <= 6 octets long (Fix a heap overflow)
    ATALK: Add bounds and length checks (Fix heap overflows)
    ATM: Add some bounds checks (Fix a heap overflow)
    ATM: Fix an incorrect bounds check
    BFD: Update specification from draft to RFC 5880
    BFD: Update to print optional authentication field
    BGP: Add support for the AIGP attribute (RFC7311)
    BGP: Print LARGE_COMMUNITY Path Attribute
    BGP: Update BGP numbers from IANA; Print minor values for FSM notification
    BOOTP: Add a bounds check
    Babel: Add decoder for source-specific extension
    CDP: Filter out non-printable characters
    CFM: Fixes to match the IEEE standard, additional bounds and length checks
    CSLIP: Add more bounds checks (Fix a heap overflow)
    ClassicalIPoATM: Add a bounds check on LLC+SNAP header (Fix a heap overflow)
    DHCP: Fix MUDURL and TZ options
    DHCPv6: Process MUDURL and TZ options
    DHCPv6: Update Status Codes with RFCs/IANA names
    DNS: Represent the "DNSSEC OK" bit as "DO" instead of "OK". Add a test case
    DTP: Improve packet integrity checks
    EGP: Fix bounds checks
    ESP: Don't use OpenSSL_add_all_algorithms() in OpenSSL 1.1.0 or later
    Ethernet: Add some bounds checking before calling isoclns_print (Fix a heap overflow)
    Ethernet: Print the Length/Type field as length when needed
    FDDI: Fix -e output for FDDI
    FR: Add some packet-length checks and improve Q.933 printing (Fix heap overflows)
    GRE: Add some bounds checks (Fix heap overflows)
    Geneve: Fix error message with invalid option length; Update list option classes
    HNCP: Fix incorrect time interval format. Fix handling of IPv4 prefixes
    ICMP6: Fetch a 32-bit big-endian quantity with EXTRACT_32BITS()
    IGMP: Add a length check
    IP: Add a bounds check (Fix a heap overflow)
    IP: Check before fetching the protocol version (Fix a heap overflow)
    IP: Don't try to dissect if IP version != 4 (Fix a heap overflow)
    IP: Stop processing IPPROTO_ values once we hit IPPROTO_IPCOMP
    IPComp: Check whether we have the CPI before we fetch it (Fix a heap overflow)
    IPoFC: Fix -e output (IP-over-Fibre Channel)
    IPv6: Don't overwrite the destination IPv6 address for routing headers
    IPv6: Fix header printing
    IPv6: Stop processing IPPROTO_ values once we hit IPPROTO_IPCOMP
    ISAKMP: Clean up parsing of IKEv2 Security Associations
    ISOCLNS/IS-IS: Add support for Purge Originator Identifier (RFC6232) and test cases
    ISOCLNS/IS-IS: Don't overwrite packet data when checking the signature
    ISOCLNS/IS-IS: Filter out non-printable characters
    ISOCLNS/IS-IS: Fix segmentation faults
    ISOCLNS/IS-IS: Have signature_verify() do the copying and clearing
    ISOCLNS: Add some bounds checks
    Juniper: Make sure a Juniper header TLV isn't bigger than what's left in the packet (Fix a heap overflow)
    LLC/SNAP: With -e, print the LLC header before the SNAP header; without it, cut the SNAP header
    LLC: Add a bounds check (Fix a heap overflow)
    LLC: Clean up printing of LLC packets
    LLC: Fix the printing of RFC 948-style IP packets
    LLC: Skip the LLC and SNAP headers with -x for 802.11 and some other protocols
    LLDP: Implement IANA OUI and LLDP MUD option
    MPLS LSP ping: Update printing for RFC 4379, bug fixes, more bounds checks
    MPLS: "length" is now the *remaining* packet length
    MPLS: Add bounds and length checks (Fix a heap overflow)
    NFS: Don't assume the ONC RPC header is nicely aligned
    NFS: Don't overflow the Opaque_Handle buffer (Fix a segmentation fault)
    NFS: Don't run past the end of an NFSv3 file handle
    OLSR: Add a test to cover a HNA sgw case
    OLSR: Fix 'Advertised networks' count
    OLSR: Fix printing of smart-gateway HNAs in IPv4
    OSPF: Add a bounds check for the Hello packet options
    OSPF: Do more bounds checking
    OSPF: Fix a segmentation fault
    OSPF: Fix printing 'ospf_topology_values' default
    OTV: Add missing bounds checks
    PGM: Print the formatted IP address, not the raw binary address, as a string
    PIM: Add some bounds checking (Fix a heap overflow)
    PIMv2: Fix checksumming of Register messages
    PPP: Add some bounds checks (Fix a heap overflow)
    PPP: Report invalid PAP AACK/ANAK packets
    Q.933: Add a missing bounds check
    RADIUS: Add Value 13 "VLAN" to Tunnel-Type attribute
    RADIUS: Filter out non-printable characters
    RADIUS: Translate UDP/1700 as RADIUS
    RESP: Do better checking of RESP packets
    RPKI-RTR: Add a return value check for "fn_printn" call
    RPKI-RTR: Remove printing when truncated condition already detected
    RPL: Fix 'Consistency Check' control code
    RPL: Fix suboption print
    RSVP: An INTEGRITY object in a submessage covers only the submessage
    RSVP: Fix an infinite loop; Add bounds and length checks
    RSVP: Fix some if statements missing brackets
    RSVP: Have signature_verify() do the copying and clearing
    RTCP: Add some bounds checks
    RTP: Add some bounds checks, fix two segmentation faults
    SCTP: Do more bounds checking
    SFLOW: Fix bounds checking
    SLOW: Fix bugs, add checks
    SMB: Before fetching the flags2 field, make sure we have it
    SMB: Do bounds checks on NBNS resource types and resource data lengths
    SNMP: Clean up the "have libsmi but no modules loaded" case
    SNMP: Clean up the object abbreviation list and fix the code to match them
    SNMP: Do bounds checks when printing character and octet strings
    SNMP: Improve ASN.1 bounds checks
    SNMP: More bounds and length checks
    STP: Add a bunch of bounds checks, and fix some printing (Fix heap overflows)
    STP: Filter out non-printable characters
    TCP: Add bounds and length checks for packets with TCP option 20
    TCP: Correct TCP option Kind value for TCP Auth and add SCPS-TP
    TCP: Fix two bounds checks (Fix heap overflows)
    TCP: Make sure we have the data offset field before fetching it (Fix a heap overflow)
    TCP: Put TCP-AO option decoding right
    TFTP: Don't use strchr() to scan packet data (Fix a heap overflow)
    Telnet: Add some bounds checks
    TokenRing: Fix -e output
    UDLD: Fix an infinite loop
    UDP: Add a bounds check (Fix a heap overflow)
    UDP: Check against the packet length first
    VAT: Add some bounds checks
    VTP: Add a test on Mgmt Domain Name length
    VTP: Add bounds checks and filter out non-printable characters
    VXLAN: Add a bound check and a test case
    ZeroMQ: Fix an infinite loop

Tuesday October 25, 2016 mcr@sandelman.ca
  Summary for 4.8.1 tcpdump release
	Fix "-x" for Apple PKTAP and PPI packets
        Improve separation frontend/backend (tcpdump/libnetdissect)
        Fix display of timestamps with -tt, -ttt and -ttttt options
        Add support for the Marvell Extended Distributed Switch Architecture header
        Use PRIx64 to print a 64-bit number in hex.
        Printer for HNCP (RFCs 7787 and 7788).
        dagid is always an IPv6 address, not an opaque 128-bit string, and other fixes to RPL printer.
        RSVP: Add bounds and length checks
        OSPF: Do more bounds checking
        Handle OpenSSL 1.1.x.
        Initial support for the REdis Serialization Protocol known as RESP.
        Add printing function for Generic Protocol Extension for VXLAN
            draft-ietf-nvo3-vxlan-gpe-01
        Network Service Header: draft-ietf-sfc-nsh-01
        Don't recompile the filter if the new file has the same DLT.
        Pass an adjusted struct pcap_pkthdr to the sub-printer.
        Add three test cases for already fixed CVEs
           CVE-2014-8767: OLSR
           CVE-2014-8768: Geonet
           CVE-2014-8769: AODV
        Don't do the DDP-over-UDP heuristic first: GitHub issue #499.
        Use the new debugging routines in libpcap.
        Harmonize TCP source or destination ports tests with UDP ones
        Introduce data types to use for integral values in packet structures.
        RSVP: Fix an infinite loop
        Support of Type 3 and Type 4 LISP packets.
        Don't require IPv6 library support in order to support IPv6 addresses.
        Many many changes to support libnetdissect usage.
        Add a test that makes unaligned accesses: GitHub issue #478.
        add a DNSSEC test case: GH #445 and GH #467.
        BGP: add decoding of ADD-PATH capability
        fixes to LLC header printing, and RFC948-style IP packets

Friday April 10, 2015 guy@alum.mit.edu
  Summary for 4.7.4 tcpdump release
	RPKI to Router Protocol: Fix Segmentation Faults and other problems
	RPKI to Router Protocol: print strings with fn_printn()
	wb: fix some bounds checks

Wednesday March 11, 2015 mcr@sandelman.ca
  Summary for 4.7.3 tcpdump release
	Capsicum fixes for FreeBSD 10

Tuesday March 10, 2015 mcr@sandelman.ca
  Summary for 4.7.2 tcpdump release
	DCCP: update Packet Types with RFC4340/IANA names
        fixes for CVE-2015-0261: IPv6 mobility header check issue
        fixes for CVE-2015-2153, 2154, 2155: kday packets

Friday Nov. 12, 2014 guy@alum.mit.edu
  Summary for 4.7.0 tcpdump release
        changes to hex printing of CDP packets
	Fix PPI printing
	Radius: update Packet Type Codes and Attribute Types with RFC/IANA names
	Add a routine to print "text protocols", and add FTP/HTTP/SMTP/RTSP support.
	improvements to telnet printer, even if not -v
	omit length for bcp, print-tcp uses it
	formatting fixes for a bunch of protocols
	new bounds checks for a number of protocols
	split netflow 1,6, and 6 dissector up.
	added geneve dissector
        CVE-2014-9140 PPP dissector fixed.

Tuesday  Sep.  2, 2014 mcr@sandelman.ca
  Summary for 4.6.2 tcpdump release
	fix out-of-source-tree builds: find libpcap that is out of source
	better configure check for libsmi

Saturday Jul. 19, 2014 mcr@sandelman.ca
  Summary for 4.6.1 tcpdump release
	added FreeBSD capsicum
	add a short option '#', same as long option '--number'

Wednesday Jul. 2, 2014 mcr@sandelman.ca
  Summary for 4.6.0 tcpdump release
        all of tcpdump is now using the new "NDO" code base (Thanks Denis!)
        nflog, mobile, forces, pptp, AODV, AHCP, IPv6, OSPFv4, RPL, DHCPv6 enhancements/fixes
        M3UA decode added.
        many new test cases: 82 in 4.5.1 to 133 in 4.6.0
        many improvements to travis continuous integration system: OSX, and Coverity options
        cleaned up some unnecessary header files
        Added bittok2str().
        a number of unaligned access faults fixed
        -A flag does not consider CR to be printable anymore
        fx.lebail took over coverity baby sitting
        default snapshot size increased to 256K for accomodate USB captures
        WARNING: this release contains a lot of very worthwhile code churn.

Wednesday Jan. 15, 2014 guy@alum.mit.edu
  Summary for 4.5.2 tcpdump release
	Man page fix
	Fix crashes on SPARC

Monday Nov. 11, 2013 mcr@sandelman.ca
  Summary for 4.5.1 tcpdump release
	CREDITS file fixes

Thursday Nov. 7, 2013  mcr@sandelman.ca and guy@alum.mit.edu.
  Summary for 4.5.0 tcpdump release
        some NFSv4 fixes for printing
        fix printing of unknown TCP options, and tcp fast-open
        fixes for syslog parser
        some gcc-version-specific flag tuning
        adopt MacOS deprecation workarounds for openssl
        improvements to babel printing
        add OpenFlow 1.0 (no SSL) and test cases
        GeoNet printer.
        added STBC Rx support
        improvements to DHCPv6 decoder
        clarify which autoconf is needed
	Point users to the the-tcpdump-group repository on GitHub rather
	    than the mcr repository
	Add MSDP printer.
	Fixed IPv6 check on Solaris and other OSes requiring extra
	    networking libraries.
	Add support for VXLAN (draft-mahalingam-dutt-dcops-vxlan-03),
	    and add "vxlan" as an option for -T.
	Add support for OTV (draft-hasmit-otv-04).
        fixes for DLT_IEEE802_11_RADIO datalink types
        added MPTCP decoder

Saturday April 6, 2013 guy@alum.mit.edu.
  Summary for 4.4.0 tcpdump release
	RPKI-RTR (RFC6810) is now official (TCP Port 323)
	Fix detection of OpenSSL libcrypto.
	Add DNSSL (RFC6106) support.
	Add "radius" as an option for -T.
	Update Action codes for handle_action function according to
	    802.11s amendment.
	Decode DHCPv6 AFTR-Name option (RFC6334).
	Updates for Babel.
	Fix printing of infinite lifetime in ICMPv6.
	Added support for SPB, SPBM Service Identifier, and Unicast
	    Address sub-TLV in ISIS.
	Decode RIPv2 authentication up to RFC4822.
	Fix RIP Request/full table decoding issues.
	On Linux systems with cap-ng.h, drop root privileges
	    using Linux Capabilities.
	Add support for reading multiple files.
	Add MS NLB heartbeat printer.
	Separate multiple nexthops in BGP.

Wednesday  November 28, 2012 guy@alum.mit.edu.
  Summary for 4.3.1 tcpdump release
	Print "LLDP, length N" for LLDP packets even when not in verbose
	    mode, so something is printed even if only the timestamp is
	    present
	Document "-T carp"
	Print NTP poll interval correctly (it's an exponent, so print
	    both its raw value and 2^value)
	Document that "-e" is used to get MAC addresses
	More clearly document that you need to escape or quote
	    backslashes in filter expressions on the command line
	Fix some "the the" in the man page
	Use the right maximum path length
	Don't treat 192_1_2, when passed to -i, as an interface number

Friday  April 3, 2012.  mcr@sandelman.ca.
  Summary for 4.3.0 tcpdump release
        fixes for forces: SPARSE data (per RFC 5810)
        some more test cases added
        updates to documentation on -l, -U and -w flags.
        Fix printing of BGP optional headers.
        Tried to include DLT_PFSYNC support, failed due to headers required.
        added TIPC support.
        Fix LLDP Network Policy bit definitions.
        fixes for IGMPv3's Max Response Time: it is in units of 0.1 second.
        SIGUSR1 can be used rather than SIGINFO for stats
        permit -n flag to affect print-ip for protocol numbers
        ND_OPT_ADVINTERVAL is in milliseconds, not seconds
        Teach PPPoE parser about RFC 4638


Friday  December 9, 2011.  guy@alum.mit.edu.
  Summary for 4.2.1 tcpdump release
	Only build the Babel printer if IPv6 is enabled.
	Support Babel on port 6696 as well as 6697.
	Include ppi.h in release tarball.
	Include all the test files in the release tarball, and don't
	 "include" test files that no longer exist.
	Don't assume we have <rpc/rpc.h> - check for it.
	Support "-T carp" as a way of dissecting IP protocol 112 as CARP
	 rather than VRRP.
	Support Hilscher NetAnalyzer link-layer header format.
	Constify some pointers and fix compiler warnings.
	Get rid of never-true test.
	Fix an unintended fall-through in a case statement in the ARP
	 printer.
	Fix several cases where sizeof(sizeof(XXX)) was used when just
	 sizeof(XXX) was intended.
	Make stricter sanity checks in the ES-IS printer.
	Get rid of some GCCisms that caused builds to fai with compilers
	 that don't support them.
	Fix typo in man page.
	Added length checks to Babel printer.

Sunday  July 24, 2011.  mcr@sandelman.ca.
  Summary for 4.2.+
	merged 802.15.4 decoder from Dmitry Eremin-Solenikov <dbaryshkov
	  at gmail dot com>
        updates to forces for new port numbers
        Use "-H", not "-h", for the 802.11s option. (-h always help)
        Better ICMPv6 checksum handling.
        add support for the RPKI/Router Protocol, per -ietf-sidr-rpki-rtr-12
        get rid of uuencoded pcap test files, git can do binary.
        sFlow changes for 64-bit counters.
        fixes for PPI packet header handling and printing.
        Add DCB Exchange protocol (DCBX) version 1.01.
        Babel dissector, from Juliusz Chroboczek and Grégoire Henry.
        improvements to radiotap for rate values > 127.
        Many improvements to ForCES decode, including fix SCTP TML port
        updated RPL type code to RPL-17 draft
        Improve printout of DHCPv6 options.
        added support and test case for QinQ (802.1q VLAN) packets
        Handle DLT_IEEE802_15_4_NOFCS like DLT_IEEE802_15_4.
        Build fixes for Sparc and other machines with alignment restrictions.
        Merged changes from Debian package.
        PGM: Add ACK decoding and add PGMCC DATA and FEEDBACK options.
        Build fixes for OSX (Snow Leopard and others)
        Add support for IEEE 802.15.4 packets

Tue.    July 20, 2010.  guy@alum.mit.edu.
  Summary for 4.1.2 tcpdump release
	If -U is specified, flush the file after creating it, so it's
	  not zero-length
	Fix TCP flags output description, and some typoes, in the man
	  page
	Add a -h flag, and only attempt to recognize 802.11s mesh
	  headers if it's set
	When printing the link-layer type list, send *all* output to
	  stderr
	Include the CFLAGS setting when configure was run in the
	  compiler flags

Thu.	April 1, 2010.  guy@alum.mit.edu.
  Summary for 4.1.1 tcpdump release
	Fix build on systems with PF, such as FreeBSD and OpenBSD.
	Don't blow up if a zero-length link-layer address is passed to
	  linkaddr_string().

Thu.	March 11, 2010.  ken@netfunctional.ca/guy@alum.mit.edu.
  Summary for 4.1.0 tcpdump release
	Fix printing of MAC addresses for VLAN frames with a length
	  field
	Add some additional bounds checks and use the EXTRACT_ macros
	  more
	Add a -b flag to print the AS number in BGP packets in ASDOT
	  notation rather than ASPLAIN notation
	Add ICMPv6 RFC 5006 support
	Decode the access flags in NFS access requests
	Handle the new DLT_ for memory-mapped USB captures on Linux
	Make the default snapshot (-s) the maximum
	Print name of device (when -L is used)
	Support for OpenSolaris (and SXCE build 125 and later)
	Print new TCP flags
	Add support for RPL DIO
	Add support for TCP User Timeout (UTO)
	Add support for non-standard Ethertypes used by 3com PPPoE gear
	Add support for 802.11n and 802.11s
	Add support for Transparent Ethernet Bridge ethertype in GRE
	Add 4 byte AS support for BGP printer
	Add support for the MDT SAFI 66 BG printer
	Add basic IPv6 support to print-olsr
	Add USB printer
	Add printer for ForCES
	Handle frames with an FCS
	Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames
	Fix TCP sequence number printing
	Report 802.2 packets as 802.2 instead of 802.3
	Don't include -L/usr/lib in LDFLAGS
	On x86_64 Linux, look in lib64 directory too
	Lots of code clean ups
	Autoconf clean ups
	Update testcases to make output changes
	Fix compiling with/out smi (--with{,out}-smi)
	Fix compiling without IPv6 support (--disable-ipv6)

Mon.    October 27, 2008.  ken@netfunctional.ca.  Summary for 4.0.0 tcpdump release
        Add support for Bluetooth Sniffing
        Add support for Realtek Remote Control Protocol (openrrcp.org.ru)
        Add support for 802.11 AVS
        Add support for SMB over TCP
        Add support for 4 byte BGP AS printing
        Add support for compiling on case-insensitive file systems
        Add support for ikev2 printing
        Update support for decoding AFS
        Update DHCPv6 printer
        Use newer libpcap API's (allows -B option on all platforms)
        Add -I to turn on monitor mode
        Bugfixes in lldp, lspping, dccp, ESP, NFS printers
        Cleanup unused files and various cruft

Mon.    September 10, 2007.  ken@xelerance.com.  Summary for 3.9.8 tcpdump release
        Rework ARP printer
        Rework OSPFv3 printer
        Add support for Frame-Relay ARP
        Decode DHCP Option 121 (RFC 3442 Classless Static Route)
        Decode DHCP Option 249 (MS Classless Static Route) the same as Option 121
        TLV: Add support for Juniper .pcap extensions
        Print EGP header in new-world-order style
        Converted print-isakmp.c to NETDISSECT
        Moved AF specific stuff into af.h
        Test subsystem now table driven, and saves outputs and diffs to one place
        Require <net/pfvar.h> for pf definitions - allows reading of pflog formatted
         libpcap files on an OS other than where the file was generated


Wed.	July 23, 2007.  mcr@xelerance.com.  Summary for 3.9.7 libpcap release

    	NFS: Print unsigned values as such.
	RX: parse safely.
	BGP: fixes for IPv6-less builds.
	801.1ag: use standard codepoint.
	use /dev/bpf on systems with such a device.
	802.11: print QoS data, avoid dissect of no-data frame, ignore padding.
	smb: make sure that we haven't gone past the end of the captured data.
	smb: squelch an uninitialized complaint from coverity.
	NFS: from NetBSD; don't interpret the reply as a possible NFS reply
		if it got MSG_DENIED.
	BGP: don't print TLV values that didn't fit, from www.digit-labs.org.
	revised INSTALL.txt about libpcap dependancy.

Wed.	April 25, 2007. ken@xelerance.com.  Summary for 3.9.6 tcpdump release
	Update man page to reflect changes to libpcap
	Changes to both TCP and IP Printer Output
	Fix a potential buffer overflow in the 802.11 printer
	Print basic info about a few more Cisco LAN protocols.
	mDNS cleanup
	ICMP MPLS rework of the extension code
	bugfix: use the correct codepoint for the OSPF simple text auth token
	 entry, and use safeputs to print the password.
	Add support in pflog for additional values
	Add support for OIF RSVP Extensions UNI 1.0 Rev. 2 and additional RSVP objects
	Add support for the Message-id NACK c-type.
	Add support for 802.3ah loopback ctrl msg
	Add support for Multiple-STP as per 802.1s
	Add support for rapid-SPT as per 802.1w
	Add support for CFM Link-trace msg, Link-trace-Reply msg,
	 Sender-ID tlv, private tlv, port, interface status
	Add support for unidirectional link detection as per
	 http://www.ietf.org/internet-drafts/draft-foschiano-udld-02.txt
	Add support for the olsr protocol as per RFC 3626 plus the LQ
	 extensions from olsr.org
	Add support for variable-length checksum in DCCP, as per section 9 of
	 RFC 4340.
	Add support for per-VLAN spanning tree and per-VLAN rapid spanning tree
	Add support for Multiple-STP as per 802.1s
	Add support for the cisco propriatry 'dynamic trunking protocol'
	Add support for the cisco proprietary VTP protocol
	Update dhcp6 options table as per IETF standardization activities


Tue.	September 19, 2006. ken@xelerance.com. Summary for 3.9.5 tcpdump release

	Fix compiling on AIX (, at end of ENUM)
	Updated list of DNS RR typecodes
	Use local Ethernet defs on WIN32
	Add support for Frame-Relay ARP
	Fixes for compiling under MSVC++
	Add support for parsing Juniper .pcap files
	Add support for FRF.16 Multilink Frame-Relay (DLT_MFR)
	Rework the OSPFv3 printer
	Fix printing for 4.4BSD/NetBSD NFS Filehandles
	Add support for Cisco style NLPID encapsulation
	Add cisco prop. eigrp related, extended communities
	Add support for BGP signaled VPLS
	Cleanup the bootp printer
	Add support for PPP over Frame-Relay
	Add some bounds checking to the IP options code, and clean up
	 the options output a bit.
	Add additional modp groups to ISAKMP printer
	Add support for Address-Withdraw and Label-Withdraw Msgs
	Add support for the BFD Discriminator TLV
	Fixes for 64bit compiling
	Add support for PIMv2 checksum verification
	Add support for further dissection of the IPCP Compression Option
	Add support for Cisco's proposed VQP protocol
	Add basic support for keyed authentication TCP option
	Lots of minor cosmetic changes to output printers


Mon. 	September 19, 2005.  ken@xelerance.com. Summary for 3.9.4 tcpdump release
	Decoder support for more Juniper link-layer types
	Fix a potential buffer overflow (although it can't occur in
		practice).
	Fix the handling of unknown management frame types in the 802.11
		printer.
	Add FRF.16 support, fix various Frame Relay bugs.
	Add support for RSVP integrity objects, update fast-reroute
		object printer to latest spec.
	Clean up documentation of vlan filter expression, document mpls
		filter expression.
	Document new pppoed and pppoes filter expressions.
	Update diffserver-TE codepoints as per RFC 4124.
	Spelling fixes in ICMPv6.
	Don't require any fields other than flags to be present in IS-IS
		restart signaling TLVs, and only print the system ID in
		those TLVs as system IDs, not as node IDs.
	Support for DCCP.

Tue. 	July 5, 2005.  ken@xelerance.com. Summary for 3.9.3 tcpdump release

	Option to chroot() when dropping privs
	Fixes for compiling on nearly every platform,
		including improved 64bit support
	Many new testcases
	Support for sending packets
	Many compliation fixes on most platforms
	Fixes for recent version of GCC to eliminate warnings
	Improved Unicode support

	Decoders & DLT Changes, Updates and New:
		AES ESP support
		Juniper ATM, FRF.15, FRF.16, PPPoE,
			ML-FR, ML-PIC, ML-PPP, PL-PPP, LS-PIC
			GGSN,ES,MONITOR,SERVICES
		L2VPN
		Axent Raptor/Symantec Firewall
		TCP-MD5 (RFC 2385)
		ESP-in-UDP (RFC 3948)
		ATM OAM
		LMP, LMP Service Discovery
		IP over FC
		IP over IEEE 1394
		BACnet MS/TP
		SS7
		LDP over TCP
		LACP, MARKER as per 802.3ad
		PGM (RFC 3208)
		LSP-PING
		G.7041/Y.1303 Generic Framing Procedure
		EIGRP-IP, EIGRP-IPX
		ICMP6
		Radio - via radiotap
		DHCPv6
		HDLC over PPP

Tue.   March 30, 2004. mcr@sandelman.ottawa.on.ca. Summary for 3.8.3 release

	No changes from 3.8.2. Version bumped only to maintain consistency
	with libpcap 0.8.3.

Mon.   March 29, 2004. mcr@sandelman.ottawa.on.ca. Summary for 3.8.2 release

	Fixes for print-isakmp.c      CVE:    CAN-2004-0183, CAN-2004-0184
	  		     http://www.rapid7.com/advisories/R7-0017.html
	IP-over-IEEE1394 printing.
	some MINGW32 changes.
	updates for autoconf 2.5
	fixes for print-aodv.c - check for too short packets
	formatting changes to print-ascii for hex output.
	check for too short packets: print-bgp.c, print-bootp.c, print-cdp.c,
		print-chdlc.c, print-domain.c, print-icmp.c, print-icmp6.c,
		print-ip.c, print-lwres.c, print-ospf.c, print-pim.c,
		print-ppp.c,print-pppoe.c, print-rsvp.c, print-wb.c
	print-ether.c - better handling of unknown types.
	print-isoclns.c - additional decoding of types.
	print-llc.c - strings for LLC names added.
	print-pfloc.c - various enhancements
	print-radius.c - better decoding to strings.

Wed.   November 12, 2003. mcr@sandelman.ottawa.on.ca. Summary for 3.8 release

	changed syntax of -E argument so that multiple SAs can be decrypted
	fixes for Digital Unix headers and Documentation
	__attribute__ fixes
	CDP changes from Terry Kennedy <terry@tmk.com>.
	IPv6 mobility updates from Kazushi Sugyo <sugyo@pb.jp.nec.com>
	Fixes for ASN.1 decoder for 2.100.3 forms.
	Added a count of packets received and processed to clarify numbers.
	Incorporated WinDUMP patches for Win32 builds.
	PPPoE payload length headers.
	Fixes for HP C compiler builds.
	Use new pcap_breakloop() and pcap_findalldevs() if we can.
	BGP output split into multiple lines.
	Fixes to 802.11 decoding.
	Fixes to PIM decoder.
	SuperH is a CPU that can't handle unaligned access. Many fixes for
		unaligned access work.
	Fixes to Frame-Relay decoder for Q.933/922 frames.
	Clarified when Solaris can do captures as non-root.
	Added tests/ subdir for examples/regression tests.
	New -U flag.	-flush stdout after every packet
	New -A flag	-print ascii only
	support for decoding IS-IS inside Cisco HDLC Frames
	more verbosity for tftp decoder
	mDNS decoder
	new BFD decoder
	cross compilation patches
	RFC 3561 AODV support.
	UDP/TCP pseudo-checksum properly for source-route options.
	sanitized all files to modified BSD license
	Add support for RFC 2625 IP-over-Fibre Channel.
	fixes for DECnet support.
	Support RFC 2684 bridging of Ethernet, 802.5 Token Ring, and FDDI.
	RFC 2684 encapsulation of BPDUs.

Tuesday, February 25, 2003. fenner@research.att.com.  3.7.2 release

	Fixed infinite loop when parsing invalid isakmp packets.
	 (reported by iDefense; already fixed in CVS)
	Fixed infinite loop when parsing invalid BGP packets.
	Fixed buffer overflow with certain invalid NFS packets.
	Pretty-print unprintable network names in 802.11 printer.
	Handle truncated nbp (appletalk) packets.
	Updated DHCPv6 printer to match draft-ietf-dhc-dhcpv6-22.txt
	Print IP protocol name even if we don't have a printer for it.
	Print IP protocol name or number for fragments.
	Print the whole MPLS label stack, not just the top label.
	Print request header and file handle for NFS v3 FSINFO and PATHCONF
	 requests.
	Fix NFS packet truncation checks.
	Handle "old" DR-Priority and Bidir-Capable PIM HELLO options.
	Handle unknown RADIUS attributes properly.
	Fix an ASN.1 parsing error that would cause e.g. the OID
	 2.100.3 to be misrepresented as 4.20.3 .

Monday, January 21, 2002. mcr@sandelman.ottawa.on.ca. Summary for 3.7 release
see http://www.tcpdump.org/cvs-log/2002-01-21.10:16:48.html for commit log.
	keyword "ipx" added.
	Better OSI/802.2 support on Linux.
	IEEE 802.11 support, from clenahan@fortresstech.com, achirica@ttd.net.
	LLC SAP support for FDDI/token ring/RFC-1483 style ATM
	BXXP protocol was replaced by the BEEP protocol;
	improvements to SNAP demux.
	Changes to "any" interface documentation.
	Documentation on pcap_stats() counters.
	Fix a memory leak found by Miklos Szeredi - pcap_ether_aton().
	Added MPLS encapsulation decoding per RFC3032.
	DNS dissector handles TKEY, TSIG and IXFR.
	adaptive SLIP interface patch from Igor Khristophorov <igor@atdot.org>
	SMB printing has much improved bounds checks
	OUI 0x0000f8 decoded as encapsulated ethernet for Cisco-custom bridging
	Zephyr support, from Nickolai Zeldovich <kolya@MIT.EDU>.
	Solaris - devices with digits in them. Stefan Hudson <hudson@mbay.net>
	IPX socket 0x85be is for Cisco EIGRP over IPX.
	Improvements to fragmented ESP handling.
	SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
	Linux ARPHDR_ATM support fixed.
	Added a "netbeui" keyword, which selects NetBEUI packets.
	IPv6 ND improvements, MobileIP dissector, 2292bis-02 for RA option.
	Handle ARPHDR_HDLC from Marcus Felipe Pereira <marcus@task.com.br>.
	Handle IPX socket 0x553 -> NetBIOS-over-IPX socket, "nwlink-dgm"
	Better Linux libc5 compat.
	BIND9 lwres dissector added.
	MIPS and SPARC get strict alignment macros (affects print-bgp.c)
	Apple LocalTalk LINKTYPE_ reserved.
	New time stamp formats documented.
	DHCP6 updated to draft-22.txt spec.
	ICMP types/codes now accept symbolic names.
	Add SIGINFO handler from LBL
	encrypted CIPE tunnels in IRIX, from Franz Schaefer <schaefer@mond.at>.
	now we are -Wstrict-prototype clean.
	NetBSD DLT_PPP_ETHER; adapted from Martin Husemann <martin@netbsd.org>.
	PPPoE dissector cleaned up.
	Support for LocalTalk hardware, from Uns Lider <unslider@miranda.org>.
	In dissector, now the caller prints the IP addresses rather than proto.
	cjclark@alum.mit.edu: print the IP proto for non-initial fragments.
	LLC frames with a DSAP and LSAP of 0xe0 are IPX frames.
	Linux cooked frames with a type value of LINUX_SLL_P_802_3 are IPX.
	captures on the "any" device won't be done in promiscuous mode
	Token Ring support on DLPI - Onno van der Linden <onno@simplex.nl>
	ARCNet support, from NetBSD.
	HSRP dissector, from Julian Cowley <julian@lava.net>.
	Handle (GRE-encapsulated) PPTP
	added -C option to rotate save file every optarg * 1,000,000 bytes.
	support for "vrrp" name - NetBSD, by Klaus Klein <kleink@netbsd.org>.
	PPTP support, from Motonori Shindo <mshindo@mshindo.net>.
	IS-IS over PPP support, from Hannes Gredler <hannes@juniper.net>.
	CNFP support for IPv6,format. Harry Raaymakers <harryr@connect.com.au>.
	ESP printing updated to RFC2406.
	HP-UX can now handle large number of PPAs.
	MSDP printer added.
	L2TP dissector improvements from Motonori Shindo.

Tuesday January 9, 2001. mcr@sandelman.ottawa.on.ca. Summary for 3.6 release
	Cleaned up documentation.
	Promisc mode fixes for Linux
	IPsec changes/cleanups.
	Alignment fixes for picky architectures

	Removed dependency on native headers for packet dissectors.
	Removed Linux specific headers that were shipped

	libpcap changes provide for exchanging capture files between
	  systems. Save files now have well known PACKET_ values instead of
	  depending upon system dependant mappings of DLT_* types.

	Support for computing/checking IP and UDP/TCP checksums.

	Updated autoconf stock files.

	IPv6 improvements: dhcp (draft-15), mobile-ip6, ppp, ospf6,

	Added dissector support for: ISOCLNS, Token Ring, IGMPv3, bxxp,
		timed, vrrp, radius, chdlc, cnfp, cdp, IEEE802.1d, raw-AppleTalk

	Added filtering support for: VLANs, ESIS, ISIS

	Improvements to: print-telnet, IPTalk, bootp/dhcp, ECN, PPP,
		L2TP, PPPoE

	HP-UX 11.0 -- find the right dlpi device.
	Solaris 8 - IPv6 works
	Linux - Added support for an "any" device to capture on all interfaces

	Security fixes: buffer overrun audit done. Strcpy replaced with
		strlcpy, sprintf replaced with snprintf.
	Look for lex problems, and warn about them.


v3.5 Fri Jan 28 18:00:00 PST 2000

Bill Fenner <fenner@research.att.com>
- switch to config.h for autoconf
- unify RCSID strings
- Updated PIMv1, PIMv2, DVMRP, IGMP parsers, add Cisco Auto-RP parser
- Really fix the RIP printer
- Fix MAC address -> name translation.
- some -Wall -Wformat fixes
- update makemib to parse much of SMIv2
- Print TCP sequence # with -vv even if you normally wouldn't
- Print as much of IP/TCP/UDP headers as possible even if truncated.

itojun@iijlab.net
- -X will make a ascii dump.  from netbsd.
- telnet command sequence decoder (ff xx xx).  from netbsd.
- print-bgp.c: improve options printing.  ugly code exists for
  unaligned option parsing (need some fix).
- const poisoning in SMB decoder.
- -Wall -Werror clean checks.
- bring in KAME IPv6/IPsec decoding code.

Assar Westerlund  <assar@sics.se>
- SNMPv2 and SNMPv3 printer
- If compiled with libsmi, tcpdump can load MIBs on the fly to decode
  SNMP packets.
- Incorporate NFS parsing code from NetBSD.  Adds support for nfsv3.
- portability fixes
- permit building in different directories.

Ken Hornstein <kenh@cmf.nrl.navy.mil>
- bring in code at
  /afs/transarc.com/public/afs-contrib/tools/tcpdump for parsing
  AFS3 packets

Andrew Tridgell <tridge@linuxcare.com>
- SMB printing code

Love <lha@stacken.kth.se>
- print-rx.c: add code for printing MakeDir and StoreStatus.  Also
  change date format to the right one.

Michael C. Richardson  <mcr@sandelman.ottawa.on.ca>
- Created tcpdump.org repository

v3.4 Sat Jul 25 12:40:55 PDT 1998

- Hardwire Linux slip support since it's too hard to detect.

- Redo configuration of "network" libraries (-lsocket and -lnsl) to
  deal with IRIX. Thanks to John Hawkinson (jhawk@mit.edu)

- Added -a which tries to translate network and broadcast addresses to
  names. Suggested by Rob van Nieuwkerk (robn@verdi.et.tudelft.nl)

- Added a configure option to disable gcc.

- Added a "raw" packet printer.

- Not having an interface address is no longer fatal. Requested by John
  Hawkinson.

- Rework signal setup to accommodate Linux.

- OSPF truncation check fix. Also display the type of OSPF packets
  using MD5 authentication. Thanks to Brian Wellington
  (bwelling@tis.com)

- Fix truncation check bugs in the Kerberos printer. Reported by Ezra
  Peisach (epeisach@mit.edu)

- Don't catch SIGHUP when invoked with nohup(1). Thanks to Dave Plonka
  (plonka@mfa.com)

- Specify full install target as a way of detecting if install
  directory does not exist. Thanks to Dave Plonka.

- Bit-swap FDDI addresses for BSD/OS too. Thanks to Paul Vixie
  (paul@vix.com)

- Fix off-by-one bug when testing size of ethernet packets. Thanks to
  Marty Leisner (leisner@sdsp.mc.xerox.com)

- Add a local autoconf macro to check for routines in libraries; the
  autoconf version is broken (it only puts the library name in the
  cache variable name). Thanks to John Hawkinson.

- Add a local autoconf macro to check for types; the autoconf version
  is broken (it uses grep instead of actually compiling a code fragment).

- Modified to support the new BSD/OS 2.1 PPP and SLIP link layer header
  formats.

- Extend OSF ip header workaround to versions 1 and 2.

- Fix some signed problems in the nfs printer. As reported by David
  Sacerdote (davids@silence.secnet.com)

- Detect group wheel and use it as the default since BSD/OS' install
  can't hack numeric groups. Reported by David Sacerdote.

- AIX needs special loader options. Thanks to Jonathan I. Kamens
  (jik@cam.ov.com)

- Fixed the nfs printer to print port numbers in decimal. Thanks to
  Kent Vander Velden (graphix@iastate.edu)

- Find installed libpcap in /usr/local/lib when not using gcc.

- Disallow network masks with non-network bits set.

- Attempt to detect "egcs" versions of gcc.

- Add missing closing double quotes when displaying bootp strings.
  Reported by Viet-Trung Luu (vluu@picard.math.uwaterloo.ca)

v3.3 Sat Nov 30 20:56:27 PST 1996

- Added Linux support.

- GRE encapsulated packet printer thanks to John Hawkinson
  (jhawk@mit.edu)

- Rewrite gmt2local() to avoid problematic os dependencies.

- Suppress nfs truncation message on errors.

- Add missing m4 quoting in AC_LBL_UNALIGNED_ACCESS autoconf macro.
  Reported by Joachim Ott (ott@ardala.han.de)

- Enable "ip_hl vs. ip_vhl" workaround for OSF4 too.

- Print arp hardware type in host order. Thanks to Onno van der Linden
  (onno@simplex.nl)

- Avoid solaris compiler warnings. Thanks to Bruce Barnett
  (barnett@grymoire.crd.ge.com)

- Fix rip printer to not print one more route than is actually in the
  packet. Thanks to Jean-Luc Richier (Jean-Luc.Richier@imag.fr) and
  Bill Fenner (fenner@parc.xerox.com)

- Use autoconf endian detection since BYTE_ORDER isn't defined on all systems.

- Fix dvmrp printer truncation checks and add a dvmrp probe printer.
  Thanks to Danny J. Mitzel (mitzel@ipsilon.com)

- Rewrite ospf printer to improve truncation checks.

- Don't parse tcp options past the EOL. As noted by David Sacerdote
  (davids@secnet.com). Also, check tcp options to make sure they ar
  actually in the tcp header (in addition to the normal truncation
  checks). Fix the SACK code to print the N blocks (instead of the
  first block N times).

- Don't say really small UDP packets are truncated just because they
  aren't big enough to be a RPC. As noted by David Sacerdote.

v3.2.1 Sun Jul 14 03:02:26 PDT 1996

- Added rfc1716 icmp codes as suggested by Martin Fredriksson
  (martin@msp.se)

- Print mtu for icmp unreach need frag packets. Thanks to John
  Hawkinson (jhawk@mit.edu)

- Decode icmp router discovery messages. Thanks to Jeffrey Honig
  (jch@bsdi.com)

- Added a printer entry for DLT_IEEE802 as suggested by Tak Kushida
  (kushida@trl.ibm.co.jp)

- Check igmp checksum if possible. Thanks to John Hawkinson.

- Made changes for SINIX. Thanks to Andrej Borsenkow
  (borsenkow.msk@sni.de)

- Use autoconf's idea of the top level directory in install targets.
  Thanks to John Hawkinson.

- Avoid infinite loop in tcp options printing code. Thanks to Jeffrey
  Mogul (mogul@pa.dec.com)

- Avoid using -lsocket in IRIX 5.2 and earlier since it breaks snoop.
  Thanks to John Hawkinson.

- Added some more packet truncation checks.

- On systems that have it, use sigset() instead of signal() since
  signal() has different semantics on these systems.

- Fixed some more alignment problems on the alpha.

- Add code to massage unprintable characters in the domain and ipx
  printers. Thanks to John Hawkinson.

- Added explicit netmask support. Thanks to Steve Nuchia
  (steve@research.oknet.com)

- Add "sca" keyword (for DEC cluster services) as suggested by Terry
  Kennedy (terry@spcvxa.spc.edu)

- Add "atalk" keyword as suggested by John Hawkinson.

- Added an igrp printer. Thanks to Francis Dupont
  (francis.dupont@inria.fr)

- Print IPX net numbers in hex a la Novell Netware. Thanks to Terry
  Kennedy (terry@spcvxa.spc.edu)

- Fixed snmp extended tag field parsing bug. Thanks to Pascal Hennequin
  (pascal.hennequin@hugo.int-evry.fr)

- Added some ETHERTYPEs missing on some systems.

- Added truncated packet macros and various checks.

- Fixed endian problems with the DECnet printer.

- Use $CC when checking gcc version. Thanks to Carl Lindberg
  (carl_lindberg@blacksmith.com)

- Fixes for AIX (although this system is not yet supported). Thanks to
  John Hawkinson.

- Fix bugs in the autoconf misaligned accesses code fragment.

- Include sys/param.h to get BYTE_ORDER in a few places. Thanks to
  Pavlin Ivanov Radoslavov (pavlin@cs.titech.ac.jp)

v3.2 Sun Jun 23 02:28:10 PDT 1996

- Print new icmp unreachable codes as suggested by Martin Fredriksson
  (martin@msp.se). Also print code value when unknown for icmp redirect
  and time exceeded.

- Fix an alignment endian bug in getname(). Thanks to John Hawkinson.

- Define "new" domain record types if not found in arpa/nameserv.h.
  Resulted from a suggestion from John Hawkinson (jhawk@mit.edu). Also
  fixed an endian bug when printing mx record and added some new record
  types.

- Added RIP V2 support. Thanks to Jeffrey Honig (jch@bsdi.com)

- Added T/TCP options printing. As suggested by Richard Stevens
  (rstevens@noao.edu)

- Use autoconf to detect architectures that can't handle misaligned
  accesses.

v3.1 Thu Jun 13 20:59:32 PDT 1996

- Changed u_int32/int32 to u_int32_t/int32_t to be consistent with bsd
  and bind (as suggested by Charles Hannum).

- Port to GNU autoconf.

- Add support for printing DVMRP and PIM traffic thanks to
  Havard Eidnes (Havard.Eidnes@runit.sintef.no).

- Fix AppleTalk, IPX and DECnet byte order problems due to wrong endian
  define being referenced. Reported by Terry Kennedy.

- Minor fixes to the man page thanks to Mark Andrews.

- Endian fixes to RTP and vat packet dumpers, thanks to Bruce Mah
  (bmah@cs.berkeley.edu).

- Added support for new dns types, thanks to Rainer Orth.

- Fixed tftp_print() to print the block number for ACKs.

- Document -dd and -ddd. Resulted from a bug report from Charlie Slater
  (cslater@imatek.com).

- Check return status from malloc/calloc/etc.

- Check return status from pcap_loop() so we can print an error and
  exit with a bad status if there were problems.

- Bail if ip option length is <= 0. Resulted from a bug report from
  Darren Reed (darrenr@vitruvius.arbld.unimelb.edu.au).

- Print out a little more information for sun rpc packets.

- Add suport for Kerberos 4 thanks to John Hawkinson (jhawk@mit.edu).

- Fixed the Fix EXTRACT_SHORT() and EXTRACT_LONG() macros (which were
  wrong on little endian machines).

- Fixed alignment bug in ipx_decode(). Thanks to Matt Crawford
  (crawdad@fnal.gov).

- Fix ntp_print() to not print garbage when the stratum is
  "unspecified." Thanks to Deus Ex Machina (root@belle.bork.com).

- Rewrote tcp options printer code to check for truncation. Added
  selective acknowledgment case.

- Fixed an endian bug in the ospf printer. Thanks to Jeffrey C Honig
  (jch@bsdi.com)

- Fix rip printer to handle 4.4 BSD sockaddr struct which only uses one
  octet for the sa_family member. Thanks to Yoshitaka Tokugawa
  (toku@dit.co.jp)

- Don't checksum ip header if we don't have all of it. Thanks to John
  Hawkinson (jhawk@mit.edu).

- Print out hostnames if possible in egp printer. Thanks to Jeffrey
  Honig (jhc@bsdi.com)


v3.1a1 Wed May  3 19:21:11 PDT 1995

- Include time.h when SVR4 is defined to avoid problems under Solaris
  2.3.

- Fix etheraddr_string() in the ETHER_SERVICE to return the saved
  strings, not the local buffer. Thanks to Stefan Petri
  (petri@ibr.cs.tu-bs.de).

- Detect when pcap raises the snaplen (e.g. with snit). Print a warning
  that the selected value was not used. Thanks to Pascal Hennequin
  (Pascal.Hennequin@hugo.int-evry.fr).

- Add a truncated packet test to print-nfs.c. Thanks to Pascal Hennequin.

- BYTEORDER -> BYTE_ORDER Thanks to Terry Kennedy (terry@spcvxa.spc.edu).

v3.0.3 Sun Oct  1 18:35:00 GMT 1995

- Although there never was a 3.0.3 release, the linux boys cleverly
  "released" one in late 1995.

v3.0.2 Thu Apr 20 21:28:16 PDT 1995

- Change configuration to not use gcc v2 flags with gcc v1.

- Redo gmt2local() so that it works under BSDI (which seems to return
  an empty timezone struct from gettimeofday()). Based on report from
  Terry Kennedy (terry@spcvxa.spc.edu).

- Change configure to recognize IP[0-9]* as "mips" SGI hardware. Based
  on report from Mark Andrews (mandrews@alias.com).

- Don't pass cc flags to gcc. Resulted from a bug report from Rainer
  Orth (ro@techfak.uni-bielefeld.de).

- Fixed printout of connection id for uncompressed tcp slip packets.
  Resulted from a bug report from Richard Stevens (rstevens@noao.edu).

- Hack around deficiency in Ultrix's make.

- Add ETHERTYPE_TRAIL define which is missing from irix5.

v3.0.1 Wed Aug 31 22:42:26 PDT 1994

- Fix problems with gcc2 vs. malloc() and read() prototypes under SunOS 4.

v3.0 Mon Jun 20 19:23:27 PDT 1994

- Added support for printing tcp option timestamps thanks to
  Mark Andrews (mandrews@alias.com).

- Reorganize protocol dumpers to take const pointers to packets so they
  never change the contents (i.e., they used to do endian conversions
  in place).  Previously, whenever more than one pass was taken over
  the packet, the packet contents would be dumped incorrectly (i.e.,
  the output form -x would be wrong on little endian machines because
  the protocol dumpers would modify the data).  Thanks to Charles Hannum
  (mycroft@gnu.ai.mit.edu) for reporting this problem.

- Added support for decnet protocol dumping thanks to Jeff Mogul
  (mogul@pa.dec.com).

- Fix bug that caused length of packet to be incorrectly printed
  (off by ether header size) for unknown ethernet types thanks
  to Greg Miller (gmiller@kayak.mitre.org).

- Added support for IPX protocol dumping thanks to Brad Parker
  (brad@fcr.com).

- Added check to verify IP header checksum under -v thanks to
  Brad Parker (brad@fcr.com).

- Move packet capture code to new libpcap library (which is
  packaged separately).

- Prototype everything and assume an ansi compiler.

- print-arp.c: Print hardware ethernet addresses if they're not
  what we expect.

- print-bootp.c: Decode the cmu vendor field. Add RFC1497 tags.
  Many helpful suggestions from Gordon Ross (gwr@jericho.mc.com).

- print-fddi.c: Improvements. Thanks to Jeffrey Mogul
  (mogul@pa.dec.com).

- print-icmp.c: Byte swap netmask before printing. Thanks to
  Richard Stevens (rstevens@noao.edu). Print icmp type when unknown.

- print-ip.c: Print the inner ip datagram of ip-in-ip encapsulated packets.
  By default, only the inner packet is dumped, appended with the token
  "(encap)".  Under -v, both the inner and output packets are dumped
  (on the same line).  Note that the filter applies to the original packet,
  not the encapsulated packet.  So if you run tcpdump on a net with an
  IP Multicast tunnel, you cannot filter out the datagrams using the
  conventional syntax.  (You can filter away all the ip-in-ip traffic
  with "not ip proto 4".)

- print-nfs.c: Keep pending rpc's in circular table. Add generic
  nfs header and remove os dependences. Thanks to Jeffrey Mogul.

- print-ospf.c: Improvements. Thanks to Jeffrey Mogul.

- tcpdump.c: Add -T flag allows interpretation of "vat", "wb", "rpc"
  (sunrpc) and rtp packets. Added "inbound" and "outbound" keywords
  Add && and || operators

v2.2.1 Tue Jun 6 17:57:22 PDT 1992

- Fix bug with -c flag.

v2.2 Fri May 22 17:19:41 PDT 1992

- savefile.c: Remove hack that shouldn't have been exported. Add
  truncate checks.

- Added the 'icmp' keyword.  For example, 'icmp[0] != 8 and icmp[0] != 0'
  matches non-echo/reply ICMP packets.

- Many improvements to filter code optimizer.

- Added 'multicast' keyword and extended the 'broadcast' keyword can now be
  so that protocol qualifications are allowed. For example, "ip broadcast"
  and "ether multicast" are valid filters.

- Added support for monitoring the loopback interface (i.e. 'tcpdump -i lo').
  Jeffrey Honig (jch@MITCHELL.CIT.CORNELL.EDU) contributed the kernel
  patches to netinet/if_loop.c.

- Added support for the Ungermann-Bass Ethernet on IBM/PC-RTs running AOS.
  Contact Jeffrey Honig (jch@MITCHELL.CIT.CORNELL.EDU) for the diffs.

- Added EGP and OSPF printers, thanks to Jeffrey Honig.

v2.1 Tue Jan 28 11:00:14 PST 1992

- Internal release (never publically exported).

v2.0.1 Sun Jan 26 21:10:10 PDT

- Various byte ordering fixes.

- Add truncation checks.

- inet.c: Support BSD style SIOCGIFCONF.

- nametoaddr.c: Handle multi addresses for single host.

- optimize.c: Rewritten.

- pcap-bpf.c: don't choke when we get ptraced. only set promiscuous
  for broadcast nets.

- print-atal.c: Fix an alignment bug (thanks to
  stanonik@nprdc.navy.mil) Add missing printf() argument.

- print-bootp.c: First attempt at decoding the vendor buffer.

- print-domain.c: Fix truncation checks.

- print-icmp.c: Calculate length of packets from the ip header.

- print-ip.c: Print frag id in decimal (so it's easier to match up
  with non-frags). Add support for ospf, egp and igmp.

- print-nfs.c: Lots of changes.

- print-ntp.c: Make some verbose output depend on -v.

- print-snmp.c: New version from John LoVerso.

- print-tcp.c: Print rfc1072 tcp options.

- tcpdump.c: Print "0x" prefix for %x formats. Always print 6 digits
  (microseconds) worth of precision. Fix uid bugs.

- A packet dumper has been added (thanks to Jeff Mogul of DECWRL).
  With this option, you can create an architecture independent binary
  trace file in real time, without the overhead of the packet printer.
  At a later time, the packets can be filtered (again) and printed.

- BSD is supported.  You must have BPF in your kernel.
  Since the filtering is now done in the kernel, fewer packets are
  dropped.  In fact, with BPF and the packet dumper option, a measly
  Sun 3/50 can keep up with a busy network.

- Compressed SLIP packets can now be dumped, provided you use our
  SLIP software and BPF.  These packets are dumped as any other IP
  packet; the compressed headers are dumped with the '-e' option.

- Machines with little-endian byte ordering are supported (thanks to
  Jeff Mogul).

- Ultrix 4.0 is supported (also thanks to Jeff Mogul).

- IBM RT and Stanford Enetfilter support has been added by
  Rayan Zachariassen <rayan@canet.ca>.  Tcpdump has been tested under
  both the vanilla Enetfilter interface, and the extended interface
  (#ifdef'd by IBMRTPC) present in the MERIT version of the Enetfilter.

- TFTP packets are now printed (requests only).

- BOOTP packets are now printed.

- SNMP packets are now printed. (thanks to John LoVerso of Xylogics).

- Sparc architectures, including the Sparcstation-1, are now
  supported thanks to Steve McCanne and Craig Leres.

- SunOS 4 is now supported thanks to Micky Liu of Columbia
  University (micky@cunixc.cc.columbia.edu).

- IP options are now printed.

- RIP packets are now printed.

- There's a -v flag that prints out more information than the
  default (e.g., it will enable printing of IP ttl, tos and id)
  and -q flag that prints out less (e.g., it will disable
  interpretation of AppleTalk-in-UDP).

- The grammar has undergone substantial changes (if you have an
  earlier version of tcpdump, you should re-read the manual
  entry).

  The most useful change is the addition of an expression
  syntax that lets you filter on arbitrary fields or values in the
  packet.  E.g., "ip[0] > 0x45" would print only packets with IP
  options, "tcp[13] & 3 != 0" would print only TCP SYN and FIN
  packets.

  The most painful change is that concatenation no longer means
  "and" -- e.g., you have to say "host foo and port bar" instead
  of "host foo port bar".  The up side to this down is that
  repeated qualifiers can be omitted, making most filter
  expressions shorter.  E.g., you can now say "ip host foo and
  (bar or baz)" to look at ip traffic between hosts foo and bar or
  between hosts foo and baz.  [The old way of saying this was "ip
  host foo and (ip host bar or ip host baz)".]

v2.0 Sun Jan 13 12:20:40 PST 1991

- Initial public release.