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tcpreplay

Manual

tcpreplay-edit

NAME

tcpreplay-edit - Replay network traffic stored in pcap files

SYNOPSIS

tcpreplay-edit [ -flags ] [ -flag [ value ]] [ --option-name [[=| ] value ]] <pcap_file(s)> | <pcap_dir(s)>

tcpreplay is a tool for replaying network traffic from files saved with tcpdump or other tools which write pcap(3) files.

DESCRIPTION

The basic operation of tcpreplay is to resend all packets from the input file(s) at the speed at which they were recorded, or a specified data rate, up to as fast as the hardware is capable.

Optionally, the traffic can be split between two interfaces, written to files, filtered and edited in various ways, providing the means to test firewalls, NIDS and other network devices.

For more details, please see the Tcpreplay Manual at: http://tcpreplay.appneta.com

OPTIONS

-r string, --portmap=string Rewrite TCP/UDP ports. This option mayappear up to 9999 times.Specify a list of comma delimited port mappings consisting of colondelimited port number pairs. Each colon delimited port pair consistsof the port to match followed by the port number to rewrite.Examples:--portmap=80:8000 --portmap=8080:80 # 80->8000 and 8080->80--portmap=8000,8080,88888:80 # 3 different ports become 80--portmap=8000-8999:80 # ports 8000 to 8999 become 80-s number, --seed=number Randomize src/dst IPv4/v6 addresses w/ givenseed. This option may appear up to 1 times. This option must notappear in combination with any of the following options: fuzz-seed.This option takes an integer number as its argument.Causes the source and destination IPv4/v6 addresses to be pseudorandomized but still maintain client/server relationships. Since therandomization is deterministic based on the seed, you can reuse thesame seed value to recreate the traffic.-N string, --pnat=string Rewrite IPv4/v6 addresses using pseudo-NAT.This option may appear up to 2 times. This option must not appear incombination with any of the following options: srcipmap.Takes a comma delimited series of colon delimited CIDR netblock pairs.Each netblock pair is evaluated in order against the IP addresses. Ifthe IP address in the packet matches the first netblock, it isrewritten using the second netblock as a mask against the high orderbits.IPv4 Example:--pnat=192.168.0.0/16:10.77.0.0/16,172.16.0.0/12:10.1.0.0/24IPv6 Example:--pnat=[2001:db8::/32]:[dead::/16],[2001:db8::/32]:[::ffff:0:0/96]-S string, --srcipmap=string Rewrite source IPv4/v6 addresses usingpseudo-NAT. This option may appear up to 1 times. This option mustnot appear in combination with any of the following options: pnat.Works just like the --pnat option, but only affects the source IPaddresses in the IPv4/v6 header.-D string, --dstipmap=string Rewrite destination IPv4/v6 addressesusing pseudo-NAT. This option may appear up to 1 times. This optionmust not appear in combination with any of the following options: pnat.Works just like the --pnat option, but only affects the destination IPaddresses in the IPv4/v6 header.-e string, --endpoints=string Rewrite IP addresses to be between twoendpoints. This option may appear up to 1 times. This option mustappear in combination with the following options: cachefile.Takes a pair of colon delimited IPv4/v6 addresses which will be used torewrite all traffic to appear to be between the two IP addresses.IPv4 Example:--endpoints=172.16.0.1:172.16.0.2IPv6 Example:--endpoints=[2001:db8::dead:beef]:[::ffff:0:0:ac:f:0:2]--tcp-sequence=number Change TCP Sequence (and ACK) numbers /w givenseed. This option takes an integer number as its argument. The valueof number is constrained to being:greater than or equal to 1The default number for this option is:0Change all TCP sequence numbers, and related sequence-acknowledgementnumbers. They will be shifted by a random amount based on the providedseed.-b, --skipbroadcast Skip rewriting broadcast/multicast IPv4/v6addresses.By default --seed, --pnat and --endpoints will rewrite broadcast andmulticast IPv4/v6 and MAC addresses. Setting this flag will keepbroadcast/multicast IPv4/v6 and MAC addresses from being rewritten.-C, --fixcsum Force recalculation of IPv4/TCP/UDP header checksums.Causes each IPv4/v6 packet to have their checksums recalculated andfixed. Automatically enabled for packets modified with --seed, --pnat,--endpoints or --fixlen.--fixhdrlen Alter IP/TCP header len to match packet length.By default, tcpreplay will send packets with the original packetlength, However, you may want the packet length revised to minimumpacket size. Using this option, tcpreplay will rewrite (fix) thepacket length, and recalculate checksums when packet length changes.Caution: undesired packet changes may occur when this option isspecified.-m number, --mtu=number Override default MTU length (1500 bytes). Thisoption may appear up to 1 times. This option takes an integer numberas its argument. The value of number is constrained to being:in the range 1 through MAX_SNAPLENOverride the default 1500 byte MTU size for determining the maximumpadding length (--fixlen=pad) or when truncating (--mtu-trunc).--mtu-trunc Truncate packets larger then specified MTU. This optionmay appear up to 1 times.Similar to --fixlen, this option will truncate data in packets fromLayer 3 and above to be no larger then the MTU.-E, --efcs Remove Ethernet checksums (FCS) from end of frames.Note, this option is pretty dangerous! We do not actually check to seeif a FCS actually exists in the frame, we just blindly delete the last4 bytes. Hence, you should only use this if you know know that your OSprovides the FCS when reading raw packets.--ttl=string Modify the IPv4/v6 TTL/Hop Limit.Allows you to modify the TTL/Hop Limit of all the IPv4/v6 packets.Specify a number to hard-code the value or +/-value to increase ordecrease by the value provided (limited to 1-255).Examples:--ttl=10--ttl=+7--ttl=-64--tos=number Set the IPv4 TOS/DiffServ/ECN byte. This option mayappear up to 1 times. This option takes an integer number as itsargument. The value of number is constrained to being:in the range 0 through 255Allows you to override the TOS (also known as DiffServ/ECN) value inIPv4.--tclass=number Set the IPv6 Traffic Class byte. This option mayappear up to 1 times. This option takes an integer number as itsargument. The value of number is constrained to being:in the range 0 through 255Allows you to override the IPv6 Traffic Class field.--flowlabel=number Set the IPv6 Flow Label. This option may appear upto 1 times. This option takes an integer number as its argument. Thevalue of number is constrained to being:in the range 0 through 1048575Allows you to override the 20bit IPv6 Flow Label field. Has no effecton IPv4 packets.-F string, --fixlen=string Pad or truncate packet data to match headerlength. This option may appear up to 1 times.Packets may be truncated during capture if the snaplen is smaller thenthe packet. This option allows you to modify the packet to pad thepacket back out to the size stored in the IPv4/v6 header or rewrite theIP header total length to reflect the stored packet length.pad Truncated packets will be padded out so that the packet lengthmatches the IPv4 total lengthtrunc Truncated packets will have their IPv4 total length fieldrewritten to match the actual packet lengthdel Delete the packet--fuzz-seed=number Fuzz 1 in X packets. Edit bytes, length, or emulatepacket drop. This option takes an integer number as its argument. Thevalue of number is constrained to being:greater than or equal to 0The default number for this option is:0This fuzzing was designed as to test layer 7 protocols such as voipprotocols. It modifies randomly 1 out of X packets (where X =--fuzz-factor) in order for stateful protocols to cover more of theircode. The random fuzzing actions focus on data start and end becauseit often is the part of the data application protocols base theirdecisions on.Possible fuzzing actions list:* drop packet* reduce packet size* edit packet Bytes:* Not all Bytes have the same probability of appearance in reallife.Replace with 0x00, 0xFF, or a random byte with equal likelihood.* Not all Bytes have the same significance in a packet.Replace the start, the end, or the middle of the packet with equallikelihood.* do nothing (7 out of 8 packets)--fuzz-factor=number Set the Fuzz 1 in X packet ratio (default 1 in 8packets). This option must appear in combination with the followingoptions: fuzz-seed. This option takes an integer number as itsargument. The value of number is constrained to being:greater than or equal to 1The default number for this option is:8Sets the ratio of for --fuzz-seed option. By default this value is 8,which means 1 in 8 packets are modified by fuzzing. Note that thisratio is based on the random number generated by the supplied fuzzseed. Therefore by default you cannot expect that exactly every eighthpacket will be modified.--skipl2broadcast Skip rewriting broadcast/multicast Layer 2 addresses.By default, editing Layer 2 addresses will rewrite broadcast andmulticast MAC addresses. Setting this flag will keepbroadcast/multicast MAC addresses from being rewritten.--dlt=string Override output DLT encapsulation. This option may appearup to 1 times.By default, no DLT (data link type) conversion will be made. To changethe DLT type of the output pcap, select one of the following values:enet Ethernet aka DLT_EN10MBhdlc Cisco HDLC aka DLT_C_HDLCjnpr_eth Juniper Ethernet DLT_C_JNPR_ETHERpppserial PPP Serial aka DLT_PPP_SERIALuser User specified Layer 2 header and DLT type--enet-dmac=string Override destination ethernet MAC addresses. Thisoption may appear up to 1 times.Takes a pair of comma deliminated ethernet MAC addresses which willreplace the destination MAC address of outbound packets. The first MACaddress will be used for the server to client traffic and the optionalsecond MAC address will be used for the client to server traffic.Example:--enet-dmac=00:12:13:14:15:16,00:22:33:44:55:66--enet-smac=string Override source ethernet MAC addresses. This optionmay appear up to 1 times.Takes a pair of comma deliminated ethernet MAC addresses which willreplace the source MAC address of outbound packets. The first MACaddress will be used for the server to client traffic and the optionalsecond MAC address will be used for the client to server traffic.Example:--enet-smac=00:12:13:14:15:16,00:22:33:44:55:66--enet-subsmac=string Substitute MAC addresses. This option may appearup to 9999 times.Allows you to rewrite ethernet MAC addresses of packets. It takes commadelimited pair or MACs address and rewrites all occurrences of thefirst MAC with the value of the second MAC. Example:--enet-subsmac=00:12:13:14:15:16,00:22:33:44:55:66--enet-mac-seed=number Randomize MAC addresses. This option may appearup to 1 times. This option must not appear in combination with any ofthe following options: enet-smac, enet-dmac, enet-subsmac. This optiontakes an integer number as its argument.Allows you to randomize ethernet MAC addresses of packets, mostly likewhat --seed option does for IPv4/IPv6 addresses.--enet-mac-seed-keep-bytes=number Randomize MAC addresses. This optionmay appear up to 1 times. This option must appear in combination withthe following options: enet-mac-seed. This option takes an integernumber as its argument. The value of number is constrained to being:in the range 1 through 6Keep some bytes untouched when usinging --enet-mac-seed option.--enet-vlan=string Specify ethernet 802.1q VLAN tag mode. This optionmay appear up to 1 times.Allows you to rewrite ethernet frames to add a 802.1q header tostandard 802.3 ethernet headers or remove the 802.1q VLAN taginformation.add Adds an 802.1q VLAN header to the existing 802.3 ethernet header.If a VLAN header already exists, a new VLAN header is added outside ofthe existing header.Note that you will be allowed to run this option multiple times tocreate more than 2 VLAN headers, however those packets will be valid.At most you should have 2 X 802.1q VLAN tags, or outer an 802.1ad andan inner 802.1q VLAN tag.del Rewrites the existing 802.1q VLAN header as an 802.3 ethernetheader--enet-vlan-tag=number Specify the new ethernet 802.1q VLAN tag value.This option may appear up to 1 times. This option must appear incombination with the following options: enet-vlan. This option takesan integer number as its argument. The value of number is constrainedto being:in the range 0 through 4095--enet-vlan-cfi=number Specify the ethernet 802.1q VLAN CFI value.This option may appear up to 1 times. This option must appear incombination with the following options: enet-vlan. This option takesan integer number as its argument. The value of number is constrainedto being:in the range 0 through 1--enet-vlan-pri=number Specify the ethernet 802.1q VLAN priority. Thisoption may appear up to 1 times. This option must appear incombination with the following options: enet-vlan. This option takesan integer number as its argument. The value of number is constrainedto being:in the range 0 through 7--enet-vlan-proto=string Specify VLAN tag protocol 802.1q or 802.1ad.This option may appear up to 1 times.Allows you to specify the protocol of the added VLAN tags.802.1q Specifies that 802.1q VLAN headers are to be added. This is thedefault.802.1ad Specifies that 802.1ad Q-in-Q VLAN headers are to be added. Tomake valid packets, input packets must already have 802.1q VLANheaders.--hdlc-control=number Specify HDLC control value. This option mayappear up to 1 times. This option takes an integer number as itsargument.The Cisco HDLC header has a 1 byte "control" field. Apparently thisshould always be 0, but if you can use any 1 byte value.--hdlc-address=number Specify HDLC address. This option may appear upto 1 times. This option takes an integer number as its argument.The Cisco HDLC header has a 1 byte "address" field which has two validvalues:0x0F Unicast0xBF BroadcastYou can however specify any single byte value.--user-dlt=number Set output file DLT type. This option may appear upto 1 times. This option takes an integer number as its argument.Set the DLT value of the output pcap file.--user-dlink=string Rewrite Data-Link layer with user specified data.This option may appear up to 2 times.Provide a series of comma deliminated hex values which will be used torewrite or create the Layer 2 header of the packets. The firstinstance of this argument will rewrite both server and client traffic,but if this argument is specified a second time, it will be used forthe client traffic.Example:--user-dlink=01,02,03,04,05,06,00,1A,2B,3C,4D,5E,6F,08,00-d number, --dbug=number Enable debugging output. This option mayappear up to 1 times. This option takes an integer number as itsargument. The value of number is constrained to being:in the range 0 through 5The default number for this option is:0If configured with --enable-debug, then you can specify a verbositylevel for debugging output. Higher numbers increase verbosity.-q, --quiet Quiet mode.Print nothing except the statistics at the end of the run-T string, --timer=string Select packet timing mode: select, ioport,gtod, nano. This option may appear up to 1 times. The default stringfor this option is:gtodAllows you to select the packet timing method to use:nano - Use nanosleep() APIselect - Use select() APIioport - Write to the i386 IO Port 0x80gtod [default] - Use a gettimeofday() loop--maxsleep=number Sleep for no more then X milliseconds betweenpackets. This option takes an integer number as its argument. Thedefault number for this option is:0Set a limit for the maximum number of milliseconds that tcpreplay willsleep between packets. Effectively prevents long delays betweenpackets without effecting the majority of packets. Default isdisabled.-v, --verbose Print decoded packets via tcpdump to STDOUT. This optionmay appear up to 1 times.-A string, --decode=string Arguments passed to tcpdump decoder. Thisoption may appear up to 1 times. This option must appear incombination with the following options: verbose.When enabling verbose mode (-v) you may also specify one or moreadditional arguments to pass to tcpdump to modify the way packets aredecoded. By default, -n and -l are used. Be sure to quote thearguments like: -A "-axxx" so that they are not interpreted bytcpreplay. Please see the tcpdump(1) man page for a complete list ofoptions.-K, --preload-pcap Preloads packets into RAM before sending.This option loads the specified pcap(s) into RAM before starting tosend in order to improve replay performance while introducing a startupperformance hit. Preloading can be used with or without --loop. Thisoption also suppresses flow statistics collection for every iteration,which can significantly reduce memory usage. Flow statistics arepredicted based on options supplied and statistics collected from thefirst loop iteration.-c string, --cachefile=string Split traffic via a tcpprep cache file.This option may appear up to 1 times. This option must appear incombination with the following options: intf2. This option must notappear in combination with any of the following options: dualfile.If you have a pcap file you would like to use to send bi-directionaltraffic through a device (firewall, router, IDS, etc) then usingtcpprep you can create a cachefile which tcpreplay will use to splitthe traffic across two network interfaces.-2, --dualfile Replay two files at a time from a network tap. Thisoption may appear up to 1 times. This option must appear incombination with the following options: intf2. This option must notappear in combination with any of the following options: cachefile.If you captured network traffic using a network tap, then you can endup with two pcap files- one for each direction. This option willreplay these two files at the same time, one on each interface andinter-mix them using the timestamps in each.-i string, --intf1=string Client to server/RX/primary traffic outputinterface. This option may appear up to 1 times. This option is amember of the intf1 class of options.Required network interface used to send either all traffic or trafficwhich is marked as ’primary’ via tcpprep. Primary traffic is usuallyclient-to-server or inbound (RX) on khial virtual interfaces.-I string, --intf2=string Server to client/TX/secondary traffic outputinterface. This option may appear up to 1 times.Optional network interface used to send traffic which is marked as’secondary’ via tcpprep. Secondary traffic is usually server-to-clientor outbound (TX) on khial virtual interfaces. Generally, it only makessense to use this option with --cachefile.-w string, --write=string Pcap file to receive traffic outputs. Thisoption may appear up to 1 times. This option is a member of the intf1class of options. This option must not appear in combination with anyof the following options: intf2.Optional pcap file name used to receive traffic.--include=string Send only selected packet numbers. This option mayappear up to 1 times. This option must not appear in combination withany of the following options: exclude.Override default of processing all packets stored in the capture fileand only send packets that are part of a supplied list of packetnumbers.-x P:1-5,9,15,72-would skip packets 1 through 5, the 9th and 15th packet, and packets 72until the end of the file--exclude=string Send all but selected packet numbers. This option mayappear up to 1 times. This option must not appear in combination withany of the following options: include.Override default of processing all packets stored in the capture fileand only send packets that are NOT part of a supplied list of packetnumbers.-x P:1-5,9,15,72-would skip packets 1 through 5, the 9th and 15th packet, and packets 72until the end of the file--listnics List available network interfaces and exit.-l number, --loop=number Loop through the capture file X times. Thisoption may appear up to 1 times. This option takes an integer numberas its argument. The value of number is constrained to being:greater than or equal to 0The default number for this option is:1--loopdelay-ms=number Delay between loops in milliseconds. This optionmust appear in combination with the following options: loop. Thisoption must not appear in combination with any of the followingoptions: loopdelay-ns. This option takes an integer number as itsargument. The value of number is constrained to being:greater than or equal to 0The default number for this option is:0--loopdelay-ns=number Delay between loops in nanoseconds. This optionmust appear in combination with the following options: loop. Thisoption must not appear in combination with any of the followingoptions: loopdelay-ms. This option takes an integer number as itsargument. The value of number is constrained to being:greater than or equal to 0The default number for this option is:0By default, tcpreplay will use loop delay with microsecond accuracy(loopdelay-ms). In order to use loop delay with nanosecond accuracyyou need to use nano packet timing mode.--pktlen Override the snaplen and use the actual packet len. Thisoption may appear up to 1 times.By default, tcpreplay will send packets based on the size of the"snaplen" stored in the pcap file which is usually the correct thing todo. However, occasionally, tools will store more bytes then told to.By specifying this option, tcpreplay will ignore the snaplen field andinstead try to send packets based on the original packet length. Badthings may happen if you specify this option.-L number, --limit=number Limit the number of packets to send. Thisoption may appear up to 1 times. This option takes an integer numberas its argument. The value of number is constrained to being:greater than or equal to 1The default number for this option is:-1By default, tcpreplay will send all the packets. Alternatively, youcan specify a maximum number of packets to send.--duration=number Limit the number of seconds to send. This option mayappear up to 1 times. This option takes an integer number as itsargument. The value of number is constrained to being:greater than or equal to 1The default number for this option is:-1By default, tcpreplay will send all the packets. Alternatively, youcan specify a maximum number of seconds to transmit.-x string, --multiplier=string Modify replay speed to a given multiple.This option may appear up to 1 times. This option must not appear incombination with any of the following options: pps, mbps, oneatatime,topspeed.Specify a value to modify the packet replay speed. Examples:2.0 will replay traffic at twice the speed captured0.7 will replay traffic at 70% the speed captured-p string, --pps=string Replay packets at a given packets/sec. Thisoption may appear up to 1 times. This option must not appear incombination with any of the following options: multiplier, mbps,oneatatime, topspeed.Specify a value to regulate the packet replay to a specificpacket-per-second rate. Examples:200 will replay traffic at 200 packets per second0.25 will replay traffic at 15 packets per minute-M string, --mbps=string Replay packets at a given Mbps. This optionmay appear up to 1 times. This option must not appear in combinationwith any of the following options: multiplier, pps, oneatatime,topspeed.Specify a floating point value for the Mbps rate that tcpreplay shouldsend packets at.-t, --topspeed Replay packets as fast as possible. This option mustnot appear in combination with any of the following options: mbps,multiplier, pps, oneatatime.-o, --oneatatime Replay one packet at a time for each user input. Thisoption must not appear in combination with any of the followingoptions: mbps, pps, multiplier, topspeed.Allows you to step through one or more packets at a time.--pps-multi=number Number of packets to send for each time interval.This option must appear in combination with the following options: pps.This option takes an integer number as its argument. The value ofnumber is constrained to being:greater than or equal to 1The default number for this option is:1When trying to send packets at very high rates, the time between eachpacket can be so short that it is impossible to accurately sleep forthe required period of time. This option allows you to send multiplepackets at a time, thus allowing for longer sleep times which can bemore accurately implemented.--unique-ip Modify IP addresses each loop iteration to generate uniqueflows. This option must appear in combination with the followingoptions: loop. This option must not appear in combination with any ofthe following options: seed, fuzz-seed.Ensure IPv4 and IPv6 packets will be unique for each --loop iteration.This is done in a way that will not alter packet CRC, and thereforewill generally not affect performance. This option will significantlyincrease the flows/sec over generated over multiple loop iterations.--unique-ip-loops=string Number of times to loop before assigning newunique ip. This option may appear up to 1 times. This option mustappear in combination with the following options: unique-ip.Number of --loop iterations before a new unique IP is assigned. Defaultis 1. Assumes both --loop and --unique-ip.--netmap Write packets directly to netmap enabled network adapter.This feature will detect netmap capable network drivers on Linux andBSD systems. If detected, the network driver is bypassed for theexecution duration, and network buffers will be written to directly.This will allow you to achieve full line rates on commodity networkadapters, similar to rates achieved by commercial network trafficgenerators. Note that bypassing the network driver will disrupt otherapplications connected through the test interface. See INSTALL for moreinformation.This feature can also be enabled by specifying an interface as’netmap:<intf>’ or ’vale:<intf>. For example ’netmap:eth0’ specifiesnetmap over interface eth0.--nm-delay=number Netmap startup delay. This option takes an integernumber as its argument. The default number for this option is:10Number of seconds to delay after netmap is loaded. Required to ensureinterfaces are fully up before netmap transmit. Requires netmap option.Default is 10 seconds.--no-flow-stats Suppress printing and tracking flow count, rates andexpirations.Suppress the collection and printing of flow statistics. This optionmay improve performance when not using --preload-pcap option, otherwiseits only function is to suppress printing.The flow feature will track and print statistics of the flows beingsent. A flow is loosely defined as a unique combination of a 5-tuple,i.e. source IP, destination IP, source port, destination port andprotocol.If --loop is specified, the flows from one iteration to the next willnot be unique, unless the packets are altered. Use --unique-ip ortcpreplay-edit to alter packets between iterations.--flow-expiry=number Number of inactive seconds before a flow isconsidered expired. This option must not appear in combination withany of the following options: no-flow-stats. This option takes aninteger number as its argument. The value of number is constrained tobeing:greater than or equal to 0The default number for this option is:0This option will track and report flow expirations based on the flowidle times. The timestamps within the pcap file are used to determinethe expiry, not the actual timestamp of the packets are replayed. Forexample, a value of 30 suggests that if no traffic is seen on a flowfor 30 seconds, any subsequent traffic would be considered a new flow,and thereby will increment the flows and flows per second (fps)statistics.This option can be used to optimize flow timeout settings for flowproducts. Setting the timeout low may lead to flows being dropped whenin fact the flow is simply slow to respond. Configuring your flowtimeouts too high may increase resources required by your flow product.Note that using this option while replaying at higher than originalspeeds can lead to inflated flows and fps counts.Default is 0 (no expiry) and a typical value is 30-120 seconds.-P, --pid Print the PID of tcpreplay at startup.--stats=number Print statistics every X seconds, or every loop if ’0’.This option takes an integer number as its argument. The value ofnumber is constrained to being:greater than or equal to 0Note that timed delays are a "best effort" and long delays betweensending packets may cause equally long delays between printingstatistics.-W, --suppress-warnings suppress printing warning messages.--xdp Write packets directly to AF_XDP enabled network adapter.This feature will detect AF_XDP capable network drivers on Linuxsystems that have ’libxdp-dev’ and ’libbpf-dev’ installed. If detected,the network stack is bypassed and packets are sent directly to an eBPFenabled driver directly. This will allow you to achieve full linerates on commodity network adapters, similar to rates achieved bycommercial network traffic generators.--xdp-batch-size=number The maximum number of packets that can besubmitted to the AF_XDP TX ring at once. This option takes an integernumber as its argument. The value of number is constrained to being:in the range 1 through 4096The default number for this option is:25Higher values may improve performance at the cost of accuracy-V, --version Print version information.-h, --less-help Display less usage information and exit.-H, --help Display usage information and exit.-!, --more-help Pass the extended usage information through a pager.--save-opts [=cfgfile] Save the option state to cfgfile. The defaultis the last configuration file listed in the OPTION PRESETS section,below. The command will exit after updating the config file.--load-opts=cfgfile, --no-load-opts Load options from cfgfile. Theno-load-opts form will disable the loading of earlier config/rc/inifiles. --no-load-opts is handled early, out of order.OPTION PRESETS

Any option that is not marked as not presettable may be preset by loading values from configuration ("RC" or ".INI") file(s). The homerc file is " $$/ ", unless that is a directory. In that case, the file " .tcpreplay-editrc " is searched for within that directory.

FILES

See OPTION PRESETS for configuration files.

EXIT STATUS

One of the following exit values will be returned:
0 (EXIT_SUCCESS) Successful program execution.

1 (EXIT_FAILURE) The operation failed or the command syntax was not
valid.

66 (EX_NOINPUT) A specified configuration file could not be loaded.

70 (EX_SOFTWARE) libopts had an internal operational error. Please
report it to autogen-users@lists.sourceforge.net. Thank you.

AUTHORS

Copyright 2013-2024 Fred Klassen - AppNeta Copyright 2000-2012 Aaron Turner For support please use the tcpreplay-users@lists.sourceforge.net mailing list. The latest version of this software is always available from: http://tcpreplay.appneta.com/

COPYRIGHT

BUGS

Please send bug reports to: tcpreplay-users@lists.sourceforge.net

NOTES

This manual page was AutoGen -erated from the tcpreplay-edit option definitions.