From owner-freebsd-questions  Sun Feb  9 16:23:12 1997
Return-Path: <owner-questions>
Received: (from root@localhost)
          by freefall.freebsd.org (8.8.5/8.8.5) id QAA21751
          for questions-outgoing; Sun, 9 Feb 1997 16:23:12 -0800 (PST)
Received: from alpha.xerox.com (alpha.Xerox.COM [13.1.64.93])
          by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id QAA21706;
          Sun, 9 Feb 1997 16:22:47 -0800 (PST)
Received: from crevenia.parc.xerox.com ([13.2.116.11]) by alpha.xerox.com with SMTP id <58318(7)>; Sun, 9 Feb 1997 16:22:10 PST
Received: from localhost by crevenia.parc.xerox.com with SMTP id <177476>; Sun, 9 Feb 1997 16:21:56 -0800
To: "Daniel O'Callaghan" <danny@panda.hilink.com.au>
cc: Bill Fenner <fenner@parc.xerox.com>, Jim Shankland <jas@flyingfox.com>,
        bugs@freebsd.org, freebsd-isp@freebsd.org, bvt@mp.aha.ru,
        freebsd-questions@freebsd.org, robert@nanguo.chalmers.com.au
Subject: Re: I give up! no ideas left. 
In-reply-to: Your message of "Sun, 09 Feb 97 15:04:38 PST."
             <Pine.BSF.3.91.970210093512.427V-100000@panda.hilink.com.au> 
Date: Sun, 9 Feb 1997 16:21:45 PST
From: Bill Fenner <fenner@parc.xerox.com>
Message-Id: <97Feb9.162156pst.177476@crevenia.parc.xerox.com>
Sender: owner-questions@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

In message <Pine.BSF.3.91.970210093512.427V-100000@panda.hilink.com.au> you wri
te:
>Is there any way to set Don't Fragment in traceroute?

Uh... right.  Pardon me while I put on my "that was a stupid idea" hat.
If you don't mind modifying the source, it's fairly straightforward;
look for where it sets up the IP header and set ip_off to IP_DF instead
of 0.

  Bill