Contents

• 1 General Info
  • 1.1 What is this FAQ for?
  • 1.2 What tools come with tcpreplay?
  • 1.3 What tools no longer come with Tcpreplay?
  • 1.4 How can I get tcpreplay's source?
  • 1.5 What requirements does tcpreplay have?
  • 1.6 Are there binaries available?
  • 1.7 Is there a Microsoft Windows port?
  • 1.8 How is tcpreplay licensed?
  • 1.9 What is tcpreplay?
  • 1.10 What are some uses for tcpreplay?
  • 1.11 What are some uses for flowreplay?
  • 1.12 What is the history of tcpreplay?
  
  
• 2 Bugs, Feature Requests, and Patches
  • 2.1 Where can I get help, report bugs or contact the developers?
  • 2.2 What information should I provide when I report a bug?
  • 2.3 I have a feature request, what should I do?
  • 2.4 I've written a patch for tcpreplay, how can I submit it?
  • 2.5 Patch requirements
  
  
• 3 Understanding tcpprep
  • 3.1 What is tcpprep?
  • 3.2 How does tcpprep work?
  • 3.3 Does tcpprep modify my libpcap file?
  • 3.4 Why use tcpprep?
  • 3.5 Can a cache file be used for multiple (different) libpcap files?
  • 3.6 Why would I want to use tcpreplay with two network cards?
  • 3.7 How big are the cache files?
  
  
• 4 Common Error and Warning Messages
  • 4.1 Can't open eth0: libnet_select_device(): Can't find interface eth0
  • 4.2 Can't open lo: libnet_select_device(): Can't find interface lo
  • 4.3 Can't open eth0: UID != 0
  • 4.4 100000 write attempts failed from full buffers and were repeated
  • 4.5 Unable to process test.cache: cache file version missmatch
  • 4.6 Skipping SLL loopback packet.
  • 4.7 Packet length (8892) is greater then MTU; skipping packet.
  
  
• 5 Common Questions from Users
  • 5.1 Why is tcpreplay not sending all the packets?
  • 5.2 Can tcpreplay read gzip/bzip2 compressed files?
  • 5.3 How fast can tcpreplay send packets?
  • 5.4 Is tcpreplay stateful?
  
  
• 6 Testing Methodologies
• 7 Required Libraries and Tools
  • 7.1 Libpcap
  • 7.2 Libnet
  • 7.3 Libpcapnav
  • 7.4 Tcpdump
  
  
• 8 Other pcap tools available
  • 8.1 Tools to capture network traffic or decode pcap files
  • 8.2 Tools to edit pcap files
  • 8.3 Other useful tools