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  1. #1

    Lightbulb Ethernet Loopback on Linux

    Hi everyone,

    I need to build a Network Responder that can be able to swap the MAC and IP addresses to let the packets come back to the original source.

    I will use it to evaluate metro ethernet virtual circuits. I will use a ethernet generator to send data and will measure if there is any packet loss, jitter, latency, etc.

    Can anyone help me.



  2. #2
    Super Moderator Roxoff's Avatar
    Join Date
    Aug 2005
    Nottingham, England
    You want to be able to re-write TCP/IP packets on the fly to change their source or destination addresses? I'm pretty sure your motives here are commercial - but not everyone who reads this will have the same opinion. Such techniques can be used to prepare denial of service attacks and such like. Maybe you should google this topic?
    Linux user #126863 - see

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