[ 1991.159904][ T5580] br0: port 1(dummy0) entered blocking state
[ 1991.160098][ T5580] br0: port 1(dummy0) entered disabled state
[ 1991.160257][ T5580] dummy0: entered allmulticast mode
[ 1991.161106][ T5580] dummy0: entered promiscuous mode
[ 1991.188930][ T5581] br0: port 1(dummy0) entered blocking state
[ 1991.189554][ T5581] br0: port 1(dummy0) entered forwarding state
[ 1993.020889][   T68] dummy0: left allmulticast mode
[ 1993.021200][   T68] dummy0: left promiscuous mode
[ 1993.021467][   T68] br0: port 1(dummy0) entered disabled state