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Date:      Mon, 11 Aug 2008 16:30:14 -0400 (EDT)
From:      Fred Portnoy <fportnoy@mail.plymouth.edu>
To:        freebsd-ipfw <freebsd-ipfw@freebsd.org>
Subject:   ipv4 diffserv entry
Message-ID:  <142385261.269891218486614044.JavaMail.root@cygnus.plymouth.edu>

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By using Sniffer and tcpdump together, it appears that the entry in the "TOS" field of the IPv4 header is getting stripped off as the packet leaves the external facing interface of the firewall. Is this known behavior? Is there a way to preserve the TOS? 

thanks

-fp

Fred Portnoy
Network Analyst
Plymouth State University

"unfettered by edgy modernisms, or classical influences"



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