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Date:      Wed, 15 Aug 2007 21:42:44 -0500
From:      Eric Anderson <anderson@freebsd.org>
To:        freebsd-hackers@freebsd.org
Subject:   Modifying bridged traffic
Message-ID:  <46C3B9A4.4000304@freebsd.org>

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What is the easiest way to play with modifying data in-transit within an 
ethernet bridge?

For instance, say I have something like this:

[BOX 1] <----> [ BOX 2 ] <----> [ BOX 3 ]

And BOX 2 is a FreeBSD box with bridging enabled between two ethernet 
interfaces, how can I parse/modify the ethernet frames as they pass through?

Eric




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