From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Lunn <andrew@lunn.ch>
Subject: Re: DSA switch
Date: Thu, 3 May 2018 22:41:50 +0200
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To: Ran Shalit <ranshalit@gmail.com>
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On Thu, May 03, 2018 at 11:35:08PM +0300, Ran Shalit wrote:
> On Wed, May 2, 2018 at 11:56 PM, Andrew Lunn <andrew@lunn.ch> wrote:
> > On Wed, May 02, 2018 at 11:20:05PM +0300, Ran Shalit wrote:
> >> Hello,
> >>
> >> Is it possible to use switch just like external real switch,
> >> connecting all ports to the same subnet ?
> >
> > Yes. Just bridge all ports/interfaces together and put your host IP
> > address on the bridge.
> 
> I also noticed that even before making the bridge connection between
> all "lanX" interfaces, the ports already communicates with each other

That should not happen. They should be isolated.

What kernel version are you using?

     Andrew