netdev - Re: PROBLEM: raw sockets rewriting IP ID in rare cases.

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Message-ID: <1281905220.2942.57.camel@edumazet-laptop>
Date:	Sun, 15 Aug 2010 22:47:00 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	Morgon.J.Kanter@...tmouth.edu, netdev@...r.kernel.org
Subject: Re: PROBLEM: raw sockets rewriting IP ID in rare cases.

Le dimanche 15 août 2010 à 13:13 -0700, David Miller a écrit :
> From: Morgon.J.Kanter@...tmouth.edu
> Date: Sun, 15 Aug 2010 13:57:41 -0400
> 
> > Is there a way to turn this behavior off, then, with raw sockets? Zero
> > is the desired ID value.
> 
> No, there isn't.

Just a note about IP_DF (Dont Fragment) bit.

If set, ID stay 0.

Not sure it can help Morgon.

Jiri Olsa added IP_NODEFRAG option some weeks ago (commit 7b2ff18e),
we probably could implement IP_NOIDENT option for RAW sockets ?

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