Command-line tool

tcpreplay

brew/tcpreplay

Checked 25 Oct 2026, 21:09 UTC · Listing refreshed from Homebrew, winget, npm, Scoop and cargo; npm packages checked against OSV.dev

Replay saved tcpdump files at arbitrary speeds

Website

At a glance

Type

Command-line tool

Install on

macOS, Linux

Last checked

25 Oct 2026, 21:09 UTC

Install it

macOS

brew install tcpreplay

Linux

brew install tcpreplay

List available network interfaces

tcpreplay --listnics

Replay traffic to interface

tcpreplay -i eth0 traffic.pcap

Replay traffic to interface and `stdout`

tcpreplay -i eth0 -v traffic.pcap

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