[ 1911.211325] br0: port 1(dummy0) entered blocking state
[ 1911.211401] br0: port 1(dummy0) entered disabled state
[ 1911.211472] dummy0: entered allmulticast mode
[ 1911.211555] dummy0: entered promiscuous mode
[ 1911.215175] br0: port 1(dummy0) entered blocking state
[ 1911.215211] br0: port 1(dummy0) entered forwarding state
[ 1911.488560] dummy0: left allmulticast mode
[ 1911.488593] dummy0: left promiscuous mode
[ 1911.488623] br0: port 1(dummy0) entered disabled state