[   29.566884][ T1183] br0: port 1(dummy0) entered blocking state
[   29.567152][ T1183] br0: port 1(dummy0) entered disabled state
[   29.567438][ T1183] dummy0: entered allmulticast mode
[   29.568374][ T1183] dummy0: entered promiscuous mode
[   29.593862][ T1184] br0: port 1(dummy0) entered blocking state
[   29.594088][ T1184] br0: port 1(dummy0) entered forwarding state
[   31.511904][   T12] dummy0: left allmulticast mode
[   31.512242][   T12] dummy0: left promiscuous mode
[   31.512635][   T12] br0: port 1(dummy0) entered disabled state