[ 1622.650219] br0: port 1(dummy0) entered blocking state
[ 1622.650254] br0: port 1(dummy0) entered disabled state
[ 1622.650288] dummy0: entered allmulticast mode
[ 1622.650340] dummy0: entered promiscuous mode
[ 1622.653207] br0: port 1(dummy0) entered blocking state
[ 1622.653234] br0: port 1(dummy0) entered forwarding state
[ 1622.851990] dummy0: left allmulticast mode
[ 1622.852018] dummy0: left promiscuous mode
[ 1622.852045] br0: port 1(dummy0) entered disabled state