[ 1742.699153] br0: port 1(dummy0) entered blocking state
[ 1742.699194] br0: port 1(dummy0) entered disabled state
[ 1742.699237] dummy0: entered allmulticast mode
[ 1742.699300] dummy0: entered promiscuous mode
[ 1742.702841] br0: port 1(dummy0) entered blocking state
[ 1742.702873] br0: port 1(dummy0) entered forwarding state
[ 1742.963279] dummy0: left allmulticast mode
[ 1742.963353] dummy0: left promiscuous mode
[ 1742.963441] br0: port 1(dummy0) entered disabled state