[  438.540937] br0: port 1(dummy0) entered blocking state
[  438.542218] br0: port 1(dummy0) entered disabled state
[  438.543997] device dummy0 entered promiscuous mode
[  438.689767] br0: port 1(dummy0) entered blocking state
[  438.691232] br0: port 1(dummy0) entered forwarding state
[  439.224156] br0: port 1(dummy0) entered disabled state
[  439.455941] device dummy0 left promiscuous mode
[  439.457283] br0: port 1(dummy0) entered disabled state