netdev - Re: [PATCH] net: Fragment large datagrams even when IP

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Date:	Wed, 08 Jun 2016 10:25:58 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	Alan.Davey@...aswitch.com
Cc:	netdev@...r.kernel.org, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net
Subject: Re: [PATCH] net: Fragment large datagrams even when IP_HDRINCL is
 set.

From: Alan Davey <Alan.Davey@...aswitch.com>
Date: Wed, 8 Jun 2016 08:41:31 +0000

> -  The current behaviour is counter-intuitive (fragmentation takes
> -  place in all other cases) and therefore different to what
> -  everyone expects.

But it's what all existing applications must expect, and as you have
seen in these replied they absolutely do.

You cannot just break things on people like this.