what's the reason behind it...is it where tcpreplay injects the
packet...bypassing the kernel's ability to push the packet up to the
application? i coded up a simple client to multicast data to the loopback via
socket call...i see that the src and dest mac addresses are both zeroed out
when captured with tcpdump. i used tcpreplay-edit to zero out both the src and
dest mac addresses...and recalc checksum...it still does not work. thoughts?
thanks.
________________________________
From: Aaron Turner <synfina...@gmail.com>
To: Main forum for tcpreplay <tcpreplay-users@lists.sourceforge.net>
Sent: Monday, October 3, 2011 9:57 AM
Subject: Re: [Tcpreplay-users] loopback on linux
On Sun, Oct 2, 2011 at 9:32 AM, Posey Mak <poseyb...@ymail.com> wrote:
> Hi.
> Regarding the following issue with the loopback, is there a work around for
> linux. I used tcpreplay to replay the multicast data captured with tcpdump
> to 'lo' but my app does not see the data while tcpdump does. Thoughts?
> Thanks.
You really need a 2nd system and send the packets from one box to the
other. You could probably also use a VM to do that and just
virtualize one of the two systems.
--
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"
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------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1
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