[ 1574.208274] br0: port 1(dummy0) entered blocking state
[ 1574.208347] br0: port 1(dummy0) entered disabled state
[ 1574.208415] dummy0: entered allmulticast mode
[ 1574.208500] dummy0: entered promiscuous mode
[ 1574.211340] br0: port 1(dummy0) entered blocking state
[ 1574.211371] br0: port 1(dummy0) entered forwarding state
[ 1574.394647] dummy0: left allmulticast mode
[ 1574.394681] dummy0: left promiscuous mode
[ 1574.394712] br0: port 1(dummy0) entered disabled state