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

[Cong Wang]

On Wed, Jul 22, 2015 at 3:28 AM, Nikolay Aleksandrov
<nikolay at cumulusnetworks.com> wrote:
> From: Satish Ashok <sashok at cumulusnetworks.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?