[ 1775.013024] br0: port 1(dummy0) entered blocking state
[ 1775.013099] br0: port 1(dummy0) entered disabled state
[ 1775.013172] dummy0: entered allmulticast mode
[ 1775.013253] dummy0: entered promiscuous mode
[ 1775.016031] br0: port 1(dummy0) entered blocking state
[ 1775.016071] br0: port 1(dummy0) entered forwarding state
[ 1775.213181] dummy0: left allmulticast mode
[ 1775.213215] dummy0: left promiscuous mode
[ 1775.213243] br0: port 1(dummy0) entered disabled state