[   77.348528][ T2307] br0: port 1(dummy0) entered blocking state
[   77.348845][ T2307] br0: port 1(dummy0) entered disabled state
[   77.349015][ T2307] dummy0: entered allmulticast mode
[   77.350580][ T2307] dummy0: entered promiscuous mode
[   77.383711][ T2308] br0: port 1(dummy0) entered blocking state
[   77.383946][ T2308] br0: port 1(dummy0) entered forwarding state
[   79.453016][   T12] dummy0: left allmulticast mode
[   79.453880][   T12] dummy0: left promiscuous mode
[   79.454298][   T12] br0: port 1(dummy0) entered disabled state