[ 1778.125601] br0: port 1(dummy0) entered blocking state
[ 1778.125691] br0: port 1(dummy0) entered disabled state
[ 1778.125766] dummy0: entered allmulticast mode
[ 1778.125866] dummy0: entered promiscuous mode
[ 1778.129481] br0: port 1(dummy0) entered blocking state
[ 1778.129528] br0: port 1(dummy0) entered forwarding state
[ 1778.383574] dummy0: left allmulticast mode
[ 1778.383610] dummy0: left promiscuous mode
[ 1778.383644] br0: port 1(dummy0) entered disabled state