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Date:	Thu, 22 Mar 2007 20:13:40 +0000
From:	James Chapman <>
To:	Ingo Oeser <>
Subject: Re: L2TP support?

Hi Ingo,

Ingo Oeser wrote:
> Hi James,
> James Chapman schrieb:
>> Is there interest in adding L2TP support?
> Yes, if there is also a user space part somewhere.

Yes there is. There's a pppd plugin which comes with the openl2tp 
project, OpenL2TP supports both LAC and 
LNS operation. A patch is also available to allow this driver to be used 
with another L2TP implementation, l2tpd.

>> I have a patch which could be submitted for review. The PPPoL2TP driver
>> presents a PPPoX socket to userspace pppd in the same way as the PPPoE
>> and PPPoATM drivers. The kernel handles all data traffic, while
>> userspace daemons do L2TP and PPP control message processing.
> Like the pppoe-plugin for pppd? 

Yes. :) The plan is to submit the pppol2tp plugin for pppd for inclusion 
in the pppd distro after the kernel driver is integrated.

> Yes, please check your patch using the nice checklist in 
> Documentation/SubmitChecklist and do it in suitable chunks 
> according to Documentation/SubmittingPatches

Will do.

James Chapman
Katalix Systems Ltd
Catalysts for your Embedded Linux software development

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