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Date:	Fri, 22 Nov 2013 06:30:16 +0100
From:	Alexander Aring <alex.aring@...il.com>
To:	Marcel Holtmann <marcel@...tmann.org>
Cc:	Jukka Rissanen <jukka.rissanen@...ux.intel.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: Question about IPv6 neighbor discovery and 6lowpan

On Fri, Nov 22, 2013 at 10:29:06AM +0700, Marcel Holtmann wrote:
> Hi Jukka,
> 
> >>> I am investigating RFC 6775 (Neighbor Discovery Optimization for IPv6
> >>> over Low-Power Wireless Personal Area Networks (6LoWPANs))
> >>> http://tools.ietf.org/html/rfc6775
> >>> 
> >>> The RFC suggests some changes to neighbor discovery procedure for the
> >>> 6LoWPAN networks. I was looking net/ipv6/ndisc.c and it seems that
> >>> ARPHRD type (from type field in net_device struct) is the only way to
> >>> detect and change the discovery procedure in the ndisc.c code. Am I
> >>> right with this assumption here?
> >>> 
> >> I think you are right, there was some patches on linux-zigbee-devel who
> >> use exact the same idea to check the ARPHRD type.
> > 
> > Ok. The reason I was interested in about this is that I proposed new
> > ARPHRD_RAWIP earlier that I could use in BT LE 6lowpan code. Now I think
> > that type might be too generic and perhaps I should have ARPHRD_6LOWPAN
> > or even ARPHRD_BT_6LOWPAN.
> 
> if it can be shared between 802.15.4 and Bluetooth, then I would propose to use ARPHRD_6LOWPAN and also convert the 802.15.4 stack to use that one.
> 
Yea, that would be great. :-)

- Alex
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