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Date:      Sat, 10 May 2008 17:55:23 +0300
From:      Alexander Motin <mav@FreeBSD.org>
To:        Oleksandr Samoylyk <oleksandr@samoylyk.sumy.ua>
Cc:        freebsd-net@freebsd.org, Julian Elischer <julian@elischer.org>
Subject:   Re: Problems with netgraph
Message-ID:  <4825B75B.9050604@FreeBSD.org>
In-Reply-To: <4825B397.4060005@samoylyk.sumy.ua>
References:  <48207C8B.4020509@samoylyk.sumy.ua>	<48209BC4.5080602@elischer.org>	<1210148584.00067004.1210135802@10.7.7.3>	<1210155784.00067045.1210144801@10.7.7.3> <1210195392.00067265.1210183802@10.7.7.3>	<1210195402.00067283.1210184402@10.7.7.3> <1210202586.00067324.1210189802@10.7.7.3>	<1210202588.00067326.1210189802@10.7.7.3> <1210202593.00067329.1210190402@10.7.7.3> <1210209785.00067436.1210197002@10.7.7.3> <4825B177.7020503@FreeBSD.org> <4825B397.4060005@samoylyk.sumy.ua>

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Oleksandr Samoylyk wrote:
> Alexander Motin wrote:
>> Oleksandr Samoylyk wrote:
>>> Julian Elischer wrote:
>>>>  this may be the issue:
>>>>   http://www.nabble.com/GRE-Mux-td16201899.html
>>>
>>> I think so. Should we hope for some progress in this direction in 
>>> future?
>>
>> This is not an issue any more for mpd.
>> Originally multiplexing based on peers addresses by socket binding and 
>> connecting was used. There was only problem with multiplexing multiple 
>> calls inside the same tunnel (having the same peer addresses).
>> Recent time (ng_pptpgre.c rev. 1.41 of Mar 24 2008) I have improved 
>> ng_pptpgre node to do multiplexing alike to the ng_l2tp node does and 
>> the latest mpd-5.1 is able to use this feature when it is present at a 
>> build time.
>>
> 
>  * $FreeBSD: src/sys/netgraph/ng_pptpgre.c,v 1.40.2.1 2008/03/30 
> 08:01:26 mav Exp $

As I can see you have build mpd before system build. Probably mpd was 
built on a system without this feature present yet:

# uname -a
FreeBSD xxx.xxxxxxxxx.xxx 7.0-STABLE FreeBSD 7.0-STABLE #0: Sat May  3
12:40:02 EEST 2008
xxxxx at xxx.xxxxxxxxx.xxx:/usr/obj/usr/src/sys/XXXX  amd64

# mpd5 -v
Version 5.1 (root at xxx.xxxxxxxxx.xxx 09:53  1-May-2008)

Try to rebuild mpd to be sure it uses this feature. Also you can check 
this by observing the name of any ng_pptpgre hook used. If it is 
"upper", then ng_pptpgre multiplexing is not used and if it is 
"session_hhhh" then OK.

-- 
Alexander Motin



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