[ 1905.659260] br0: port 1(dummy0) entered blocking state
[ 1905.659295] br0: port 1(dummy0) entered disabled state
[ 1905.659334] dummy0: entered allmulticast mode
[ 1905.659382] dummy0: entered promiscuous mode
[ 1905.662126] br0: port 1(dummy0) entered blocking state
[ 1905.662186] br0: port 1(dummy0) entered forwarding state
[ 1905.848861] dummy0: left allmulticast mode
[ 1905.848920] dummy0: left promiscuous mode
[ 1905.848981] br0: port 1(dummy0) entered disabled state