Re: [Tcpreplay-users] replay but no receive

[Aaron T. <syn...@gm...>]

On Sun, Jun 13, 2010 at 10:29 PM, Federico D. Sacerdoti
<fed...@gm...> wrote:
> Hi,
>
> This tool is exactly what I need to test a UDP-based monitoring
> daemon, however I am having trouble getting the OS kernel to accept
> replayed packets. I could not find a discussion on the README or FAQs,
> so I assume I'm just doing it wrong.
>
> Problem: my packet trace can be replayed, tcpdump shows it going out
> of the sender's interface just fine (the sender is OS X), but the
> receiving node does not receive them, i.e. tcpdump is silent (the
> receiver is Linux/Fedora 12 x86_64).
>
> A simple capture and replay of a 10-packet trace between the two hosts
> works fine. I can change the port using tcpreplay and it works fine as
> well. I have attached the trace that does not play correctly.
>
> I apply the tcprewrite command below, then send them. There are no
> errors in either. Somehow the kernel/network does not register the
> re-written packets as worthy of reaching the dst host. Hmm. Any help
> would be appreciated, I apologize if this report is vague.
>
I'm going to take a guess here...

en1 on OS X... that's not a wireless card is it?

http://tcpreplay.synfin.net/wiki/FAQ#CantcpreplaysendpacketsoverWiFi

If not, then send more information about your hardware and how the two
boxes are connected.

-Aaron


-- 
Aaron Turner
http://synfin.net/         Twitter: @synfinatic
http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & Windows
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
    -- Benjamin Franklin
"carpe diem quam minimum credula postero"