[ 1866.994853] br0: port 1(dummy0) entered blocking state
[ 1866.994892] br0: port 1(dummy0) entered disabled state
[ 1866.994931] dummy0: entered allmulticast mode
[ 1866.994996] dummy0: entered promiscuous mode
[ 1866.998343] br0: port 1(dummy0) entered blocking state
[ 1866.998379] br0: port 1(dummy0) entered forwarding state
[ 1867.254572] dummy0: left allmulticast mode
[ 1867.254605] dummy0: left promiscuous mode
[ 1867.254640] br0: port 1(dummy0) entered disabled state