linux-kernel - Re: IP over 802.2 with LLC/SNAP

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Date:	Tue, 26 Jul 2011 22:13:01 -0700
From:	Ben Pfaff <blp@...stanford.edu>
To:	Alan Ott <alan@...nal11.us>
Cc:	linux-kernel@...r.kernel.org, linux-net@...r.kernel.org
Subject: Re: IP over 802.2 with LLC/SNAP

[I'm not sure that linux-net is an active list, are you looking
for netdev@...r.kernel.org?]

Alan Ott <alan@...nal11.us> writes:

> So the question is, does Linux support IP over 802.2 with
> LLC/SNAP? 

No, I don't think that it does.  I tested this perhaps a year
ago, out of curiosity as much as anything else, and could not
find a way to make it work.

> Is there a sysfs/proc entry that I have to turn on to make this
> work (I didn't find one)?

I did not find one at the time.

I did find that one router on my company's network (I think it
was a Cisco) transformed the 802.2 LLC/SNAP headers into Ethernet
II headers as packets passed through it, which effectively acted
as a gateway to allow Linux to talk IP over 802.2 LLC/SNAP.  But
I don't think that it translated in the other direction.
-- 
Ben Pfaff 
http://benpfaff.org
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