From mboxrd@z Thu Jan  1 00:00:00 1970
From: Phil Oester <kernel@linuxace.com>
Subject: Re: [PATCH] MASQUERADE handling of device events
Date: Mon, 8 Nov 2004 08:15:11 -0800
Message-ID: <20041108161511.GA6754@linuxace.com>
References: <20041107181825.GA3522@linuxace.com> <418F9952.5030004@trash.net>
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To: Patrick McHardy <kaber@trash.net>
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On Mon, Nov 08, 2004 at 05:05:38PM +0100, Patrick McHardy wrote:
> But without the ifindex comparison, a situation like this can happen:
> 
> ppp0 goes down
> ppp1 goes down
> ppp0 comes up again, same IP as before
> ppp1 connections get killed
> ppp1 comes up again
> 
> So we should keep this.

But ifindex is meaningless on ppp interfaces - it is incremented on each
cycle.  So there is no way to say that the original ppp1 is the same
interface as the new ppp1.

ifindex just cannot be used reliably.

Phil