netdev - Re: Receiving decrypted IPsec Packets including MAC source address

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Message-Id: <200809221137.21326.remi.denis-courmont@nokia.com>
Date:	Mon, 22 Sep 2008 11:37:21 +0300
From:	"Rémi Denis-Courmont" 
	<remi.denis-courmont@...ia.com>
To:	pommnitz@...oo.com
Cc:	netdev@...r.kernel.org
Subject: Re: Receiving decrypted IPsec Packets including MAC source address

On Monday 22 September 2008 11:25:11 ext Joerg Pommnitz, you wrote:
> Hello all,
> is there a way to get the source MAC address for a decrypted IPsec
> protected UDP packet? For unencrypted data I would use RAW sockets, but
> this obviously fails for encrypted data.

In either case, you would have to use PACKET sockets as INET raw sockets won't 
give you the link-layer headers. But yeah, that would mean deciphering the 
packets in userland.

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