[  522.728630][ T9831] br0: port 1(dummy0) entered blocking state
[  522.728781][ T9831] br0: port 1(dummy0) entered disabled state
[  522.728895][ T9831] dummy0: entered allmulticast mode
[  522.729414][ T9831] dummy0: entered promiscuous mode
[  522.752290][ T9832] br0: port 1(dummy0) entered blocking state
[  522.752474][ T9832] br0: port 1(dummy0) entered forwarding state
[  524.002988][   T12] dummy0: left allmulticast mode
[  524.003142][   T12] dummy0: left promiscuous mode
[  524.003315][   T12] br0: port 1(dummy0) entered disabled state