[  842.878288] br0: port 1(dummy0) entered blocking state
[  842.878367] br0: port 1(dummy0) entered disabled state
[  842.878445] dummy0: entered allmulticast mode
[  842.878530] dummy0: entered promiscuous mode
[  842.881845] br0: port 1(dummy0) entered blocking state
[  842.881886] br0: port 1(dummy0) entered forwarding state
[  843.098474] dummy0: left allmulticast mode
[  843.098569] dummy0: left promiscuous mode
[  843.098637] br0: port 1(dummy0) entered disabled state