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From: Sven Eckelmann <sven@narfation.org>
Date: Thu, 10 Mar 2016 19:44:40 +0100
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In-Reply-To: <1408455756-10794-1-git-send-email-sw@simonwunderlich.de>
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Subject: Re: [B.A.T.M.A.N.] [PATCH] batman-adv: add detection for complex
	bridge loops
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To: b.a.t.m.a.n@lists.open-mesh.org, Simon Wunderlich <simon.wunderlich@open-mesh.com>

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On Tuesday 19 August 2014 15:42:36 Simon Wunderlich wrote:
> From: Simon Wunderlich <simon@open-mesh.com>
> 
> There are network setups where the current bridge loop avoidance can't
> detect bridge loops. The minimal setup affected would consist of two
> LANs and two separate meshes, connected in a ring like that:
> 
>    A...(mesh1)...B
>    |             |
>  (LAN1)        (LAN2)
>    |             |
>    C...(mesh2)...D
> 
> Since both the meshes and backbones are separate, the bridge loop
> avoidance has not enough information to detect and avoid the loop
> in this case. Even if these scenarios can't be fixed easily,
> these kind of loops can be detected.
> 
> This patch implements a periodic check (running every 60 seconds for
> now) which sends a broadcast frame with a random MAC address on
> each backbone VLAN. If a broadcast frame with the same MAC address
> is received shortly after on the mesh, we know that there must be a
> loop and report that incident as well as throw an uevent to let others
> handle that problem.
> 
> Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
> ---

It looks like this patch doesn't apply anymore. Can you please resent it or
mark it correctly in patchwork [1].

Thanks,
        Sven

[1] https://patchwork.open-mesh.org/patch/4154/

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