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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | NOTES | AUTHORS |
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RANDPKTDUMP(1) RANDPKTDUMP(1)
randpktdump - Provide an interface to generate random captures
using randpkt
randpktdump [ --help ] [ --version ] [ --extcap-interfaces ] [
--extcap-dlts ] [ --extcap-interface=<interface> ] [
--extcap-config ] [ --capture ] [ --fifo=<path to file or pipe> ]
[ --maxbytes=<bytes> ] [ --count=<num> ] [ --delay=<ms> ] [
--random-type=<true|false> ] [ --all-random=<true|false> ] [
--type=<packet type> ]
randpktdump is a extcap tool that provides access to the random
packet generator (randpkt). It is mainly used for testing and
educational purpose.
--help
Print program arguments.
--version
Print program version.
--extcap-interfaces
List available interfaces.
--extcap-interface=<interface>
Use specified interfaces.
--extcap-dlts
List DLTs of specified interface.
--extcap-config
List configuration options of specified interface.
--capture
Start capturing from specified interface save saved it in
place specified by --fifo.
--fifo=<path to file or pipe>
Save captured packet to file or send it through pipe.
--maxbytes=<bytes>
Set the max number of bytes per packet.
--count=<num>
Number of packets to generate (-1 for infinite).
--delay=<ms>
Wait a number of milliseconds after writing each packet.
--random-type
Choose a random packet type for all packets if set to true.
--all-random
Choose a different random packet type for each packet if set
to true.
--type=<packet type>
Use the selected packet type. To list all the available packet
type, run randpktdump --help.
To see program arguments:
randpktdump --help
To see program version:
randpktdump --version
To see interfaces:
randpktdump --extcap-interfaces
Example output
interface {value=randpkt}{display=Random packet generator}
To see interface DLTs:
randpktdump --extcap-interface=randpkt --extcap-dlts
Example output
dlt {number=1}{name=randpkt}{display=Ethernet}
To see interface configuration options:
randpktdump --extcap-interface=randpkt --extcap-config
Example output
arg {number=0}{call=--maxbytes}{display=Max bytes in a packet}{type=unsigned}{range=1,5000}{default=5000}{tooltip=The max number of bytes in a packet}
arg {number=1}{call=--count}{display=Number of packets}{type=long}{default=1000}{tooltip=Number of packets to generate (-1 for infinite)}
arg {number=2}{call=--delay}{display=Packet delay (ms)}{type=long}{default=0}{tooltip=Milliseconds to wait after writing each packet}
arg {number=3}{call=--random-type}{display=Random type}{type=boolflag}{default=false}{tooltip=The packets type is randomly chosen}
arg {number=4}{call=--all-random}{display=All random packets}{type=boolflag}{default=false}{tooltip=Packet type for each packet is randomly chosen}
arg {number=5}{call=--type}{display=Type of packet}{type=selector}{tooltip=Type of packet to generate}
value {arg=5}{value=arp}{display=Address Resolution Protocol}
[...]
value {arg=5}{value=usb-linux}{display=Universal Serial Bus with Linux specific header}
To capture:
randpktdump --extcap-interface=randpkt --fifo=/tmp/randpkt.pcapng --capture
Note
To stop capturing CTRL+C/kill/terminate the application.
wireshark(1), tshark(1), dumpcap(1), extcap(4), randpkt(1)
randpktdump is part of the Wireshark distribution. The latest
version of Wireshark can be found at https://www.wireshark.org.
HTML versions of the Wireshark project man pages are available at
https://www.wireshark.org/docs/man-pages.
Original Author
Dario Lombardo <lomato[AT]gmail.com>.SH COLOPHON This page is part
of the wireshark (Interactively dump and analyze network traffic)
project. Information about the project can be found at
⟨https://www.wireshark.org/⟩. If you have a bug report for this
manual page, see
⟨https://gitlab.com/wireshark/wireshark/-/issues⟩. This page was
obtained from the project's upstream Git repository
⟨https://gitlab.com/wireshark/wireshark.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
2025-03-07 RANDPKTDUMP(1)
Pages that refer to this page: extcap(4)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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