On Wed, 6 Sep 2017 02:47:03 +0200
Andrew Lunn [off-list ref] wrote:

quoted

The third and last issue will be explained in a followup email.  

Hi DSA hackers

So there is the third issue. It affects just DSA, but it possible
affects all DSA drivers.

This patchset broken broadcast with the Marvell drivers. It could
break broadcast on others drivers as well.

What i found is that the Marvell chips don't flood broadcast frames
between bridged ports. What appears to happen is there is a fdb miss,
so it gets forwarded to the CPU port for the host to deal with. The
software bridge when floods it out all ports of the bridge.

That sounds like a good feature. There environments where you want
to disable broadcast between certain ports. It lets the bridge get
at the traffic for firewall filtering.