netdev - Re: [PATCH] ip: add loose reverse path filtering

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Message-Id: <20090221.235601.92406212.davem@davemloft.net>
Date:	Sat, 21 Feb 2009 23:56:01 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	shemminger@...tta.com, hawk@...u.dk, netdev@...r.kernel.org
Subject: Re: [PATCH] ip: add loose reverse path filtering

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Sat, 21 Feb 2009 21:09:07 +0800

> Stephen Hemminger <shemminger@...tta.com> wrote:
> > Extend existing reverse path filter option to allow strict or loose
> > filtering. (See http://en.wikipedia.org/wiki/Reverse_path_filtering).
> > 
> > For compatibility with existing usage, the value 1 is chosen for strict mode
> > and 2 for loose mode.
> > 
> > Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
> 
> Rather than extending the rp_filter stuff any further, I'd prefer
> to see this replaced with netfilter plugin.

Normally I would agree, but in this case the cost is exactly
zero for the added flexibility.

So I'll apply this to net-next-2.6
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