[ 1887.207926] br0: port 1(dummy0) entered blocking state
[ 1887.207990] br0: port 1(dummy0) entered disabled state
[ 1887.208026] dummy0: entered allmulticast mode
[ 1887.208075] dummy0: entered promiscuous mode
[ 1887.211335] br0: port 1(dummy0) entered blocking state
[ 1887.211395] br0: port 1(dummy0) entered forwarding state
[ 1887.438219] dummy0: left allmulticast mode
[ 1887.438255] dummy0: left promiscuous mode
[ 1887.438285] br0: port 1(dummy0) entered disabled state