[ 1807.396811] br0: port 1(dummy0) entered blocking state
[ 1807.396885] br0: port 1(dummy0) entered disabled state
[ 1807.396958] dummy0: entered allmulticast mode
[ 1807.397043] dummy0: entered promiscuous mode
[ 1807.400516] br0: port 1(dummy0) entered blocking state
[ 1807.400549] br0: port 1(dummy0) entered forwarding state
[ 1807.630880] dummy0: left allmulticast mode
[ 1807.630919] dummy0: left promiscuous mode
[ 1807.630954] br0: port 1(dummy0) entered disabled state