netdev - Re: [PATCH net-next] bridge: mcast: when multicast is disabled flush the groups

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Message-ID: <CAHA+R7PTV5aTk2JyaaCQ1awi_Cwz+jzA4tv9n2nEvaFxhuD0Pg@mail.gmail.com>
Date:	Wed, 22 Jul 2015 10:03:43 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Cc:	netdev <netdev@...r.kernel.org>,
	"bridge@...ts.linux-foundation.org" 
	<bridge@...ts.linux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Stephen Hemminger <stephen@...workplumber.org>,
	Satish Ashok <sashok@...ulusnetworks.com>
Subject: Re: [PATCH net-next] bridge: mcast: when multicast is disabled flush
 the groups

On Wed, Jul 22, 2015 at 3:28 AM, Nikolay Aleksandrov
<nikolay@...ulusnetworks.com> wrote:
> From: Satish Ashok <sashok@...ulusnetworks.com>
>
> Once multicast gets disabled we should flush the groups.
> Example:
> # bridge mdb add dev br0 port eth3 grp 239.0.0.1
> # bridge mdb
> dev br0 port eth3 grp 239.0.0.1 temp
> # echo 0 > multicast_snooping
> # bridge mdb

Why? Why we can't save the mdb config for a mcast snooping flip?
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