[ 1771.648955] br0: port 1(dummy0) entered blocking state
[ 1771.649049] br0: port 1(dummy0) entered disabled state
[ 1771.649119] dummy0: entered allmulticast mode
[ 1771.649213] dummy0: entered promiscuous mode
[ 1771.652926] br0: port 1(dummy0) entered blocking state
[ 1771.652963] br0: port 1(dummy0) entered forwarding state
[ 1771.897934] dummy0: left allmulticast mode
[ 1771.897973] dummy0: left promiscuous mode
[ 1771.898007] br0: port 1(dummy0) entered disabled state