[ 2192.427955][T20122] br0: port 1(dummy0) entered blocking state
[ 2192.428262][T20122] br0: port 1(dummy0) entered disabled state
[ 2192.428541][T20122] dummy0: entered allmulticast mode
[ 2192.429538][T20122] dummy0: entered promiscuous mode
[ 2192.461556][T20123] br0: port 1(dummy0) entered blocking state
[ 2192.461922][T20123] br0: port 1(dummy0) entered forwarding state
[ 2194.848196][   T12] dummy0: left allmulticast mode
[ 2194.848933][   T12] dummy0: left promiscuous mode
[ 2194.849532][   T12] br0: port 1(dummy0) entered disabled state