[ 1942.076595] br0: port 1(dummy0) entered blocking state
[ 1942.076635] br0: port 1(dummy0) entered disabled state
[ 1942.076680] dummy0: entered allmulticast mode
[ 1942.076732] dummy0: entered promiscuous mode
[ 1942.080771] br0: port 1(dummy0) entered blocking state
[ 1942.080843] br0: port 1(dummy0) entered forwarding state
[ 1942.412453] dummy0: left allmulticast mode
[ 1942.412510] dummy0: left promiscuous mode
[ 1942.412555] br0: port 1(dummy0) entered disabled state