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Date:   Wed, 16 Dec 2020 16:43:00 +0100
From:   Andrew Lunn <>
To:     Vladimir Oltean <>
Cc:     Vivien Didelot <>,
        Florian Fainelli <>,
        Jakub Kicinski <>,,,,
        Roopa Prabhu <>,
        Nikolay Aleksandrov <>,
        "David S. Miller" <>,
        DENG Qingfang <>,
        Tobias Waldekranz <>,
        Marek Behun <>,
        Russell King - ARM Linux admin <>,
        Alexandra Winter <>,
        Jiri Pirko <>,
        Ido Schimmel <>,
        Claudiu Manoil <>,
Subject: Re: [PATCH v3 net-next 7/7] net: dsa: ocelot: request DSA to fix up
 lack of address learning on CPU port

On Sun, Dec 13, 2020 at 04:07:10PM +0200, Vladimir Oltean wrote:
> Given the following setup:
> ip link add br0 type bridge
> ip link set eno0 master br0
> ip link set swp0 master br0
> ip link set swp1 master br0
> ip link set swp2 master br0
> ip link set swp3 master br0
> Currently, packets received on a DSA slave interface (such as swp0)
> which should be routed by the software bridge towards a non-switch port
> (such as eno0) are also flooded towards the other switch ports (swp1,
> swp2, swp3) because the destination is unknown to the hardware switch.
> This patch addresses the issue by monitoring the addresses learnt by the
> software bridge on eno0, and adding/deleting them as static FDB entries
> on the CPU port accordingly.
> Signed-off-by: Vladimir Oltean <>
> Reviewed-by: Florian Fainelli <>

Reviewed-by: Andrew Lunn <>


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