netdev - Re: [PATCH] [TPROXY] implemented IP_RECVORIGDSTADDR socket option

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Message-Id: <200811131309.10693.remi.denis-courmont@nokia.com>
Date:	Thu, 13 Nov 2008 13:09:10 +0200
From:	"Rémi Denis-Courmont" 
	<remi.denis-courmont@...ia.com>
To:	"ext Balazs Scheidler" <bazsi@...abit.hu>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] [TPROXY] implemented IP_RECVORIGDSTADDR socket option

On Thursday 13 November 2008 12:37:04 ext Balazs Scheidler, you wrote:
> In case UDP traffic is redirected to a local UDP socket,
> the originally addressed destination address/port
> cannot be recovered with the in-kernel tproxy.
>
> This patch adds an IP_RECVORIGDSTADDR sockopt that enables
> a IP_ORIGDSTADDR ancillary message in recvmsg(). This
> ancillary message contains the original destination address/port
> of the packet being received.

Does this not duplicate the IP_PKTINFO functionality?

-- 
Rémi Denis-Courmont
Maemo Software, Nokia Devices R&D
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