[ 1804.855026] br0: port 1(dummy0) entered blocking state
[ 1804.855083] br0: port 1(dummy0) entered disabled state
[ 1804.855115] dummy0: entered allmulticast mode
[ 1804.855167] dummy0: entered promiscuous mode
[ 1804.858733] br0: port 1(dummy0) entered blocking state
[ 1804.858765] br0: port 1(dummy0) entered forwarding state
[ 1805.109199] dummy0: left allmulticast mode
[ 1805.109242] dummy0: left promiscuous mode
[ 1805.109274] br0: port 1(dummy0) entered disabled state