[   71.895813][ T1437] br0: port 1(dummy0) entered blocking state
[   71.896138][ T1437] br0: port 1(dummy0) entered disabled state
[   71.896350][ T1437] dummy0: entered allmulticast mode
[   71.897290][ T1437] dummy0: entered promiscuous mode
[   71.921172][ T1438] br0: port 1(dummy0) entered blocking state
[   71.921405][ T1438] br0: port 1(dummy0) entered forwarding state
[   73.870565][   T12] dummy0: left allmulticast mode
[   73.870954][   T12] dummy0: left promiscuous mode
[   73.871228][   T12] br0: port 1(dummy0) entered disabled state