[ 1608.381937] br0: port 1(dummy0) entered blocking state
[ 1608.382003] br0: port 1(dummy0) entered disabled state
[ 1608.382072] dummy0: entered allmulticast mode
[ 1608.382159] dummy0: entered promiscuous mode
[ 1608.384941] br0: port 1(dummy0) entered blocking state
[ 1608.384972] br0: port 1(dummy0) entered forwarding state
[ 1608.577068] dummy0: left allmulticast mode
[ 1608.577102] dummy0: left promiscuous mode
[ 1608.577159] br0: port 1(dummy0) entered disabled state