[ 1875.369061][ T6575] br0: port 1(dummy0) entered blocking state
[ 1875.369295][ T6575] br0: port 1(dummy0) entered disabled state
[ 1875.369510][ T6575] dummy0: entered allmulticast mode
[ 1875.370465][ T6575] dummy0: entered promiscuous mode
[ 1875.393226][ T6576] br0: port 1(dummy0) entered blocking state
[ 1875.393842][ T6576] br0: port 1(dummy0) entered forwarding state
[ 1877.330104][   T12] dummy0: left allmulticast mode
[ 1877.330258][   T12] dummy0: left promiscuous mode
[ 1877.330469][   T12] br0: port 1(dummy0) entered disabled state