[  833.598936] br0: port 1(dummy0) entered blocking state
[  833.598976] br0: port 1(dummy0) entered disabled state
[  833.599016] dummy0: entered allmulticast mode
[  833.599067] dummy0: entered promiscuous mode
[  833.602773] br0: port 1(dummy0) entered blocking state
[  833.602823] br0: port 1(dummy0) entered forwarding state
[  833.878212] dummy0: left allmulticast mode
[  833.878259] dummy0: left promiscuous mode
[  833.878289] br0: port 1(dummy0) entered disabled state