[ 1900.147074][ T6152] br0: port 1(dummy0) entered blocking state
[ 1900.147261][ T6152] br0: port 1(dummy0) entered disabled state
[ 1900.147426][ T6152] dummy0: entered allmulticast mode
[ 1900.148551][ T6152] dummy0: entered promiscuous mode
[ 1900.175625][ T6153] br0: port 1(dummy0) entered blocking state
[ 1900.175922][ T6153] br0: port 1(dummy0) entered forwarding state
[ 1902.145034][   T12] dummy0: left allmulticast mode
[ 1902.146027][   T12] dummy0: left promiscuous mode
[ 1902.146313][   T12] br0: port 1(dummy0) entered disabled state