[ 1936.169267][T28056] br0: port 1(dummy0) entered blocking state
[ 1936.169493][T28056] br0: port 1(dummy0) entered disabled state
[ 1936.169666][T28056] dummy0: entered allmulticast mode
[ 1936.171144][T28056] dummy0: entered promiscuous mode
[ 1936.207200][T28057] br0: port 1(dummy0) entered blocking state
[ 1936.207418][T28057] br0: port 1(dummy0) entered forwarding state
[ 1938.142878][   T12] dummy0: left allmulticast mode
[ 1938.143969][   T12] dummy0: left promiscuous mode
[ 1938.144190][   T12] br0: port 1(dummy0) entered disabled state