[ 2113.380023][ T1974] br0: port 1(dummy0) entered blocking state
[ 2113.380264][ T1974] br0: port 1(dummy0) entered disabled state
[ 2113.380496][ T1974] dummy0: entered allmulticast mode
[ 2113.381465][ T1974] dummy0: entered promiscuous mode
[ 2113.401646][ T1975] br0: port 1(dummy0) entered blocking state
[ 2113.401971][ T1975] br0: port 1(dummy0) entered forwarding state
[ 2115.139665][   T12] dummy0: left allmulticast mode
[ 2115.139870][   T12] dummy0: left promiscuous mode
[ 2115.140153][   T12] br0: port 1(dummy0) entered disabled state