[  484.552810] br0: port 1(dummy0) entered blocking state
[  484.552865] br0: port 1(dummy0) entered disabled state
[  484.552904] dummy0: entered allmulticast mode
[  484.552967] dummy0: entered promiscuous mode
[  484.557049] br0: port 1(dummy0) entered blocking state
[  484.557092] br0: port 1(dummy0) entered forwarding state
[  484.871588] dummy0: left allmulticast mode
[  484.871631] dummy0: left promiscuous mode
[  484.871668] br0: port 1(dummy0) entered disabled state