[ 1632.217770] br0: port 1(dummy0) entered blocking state
[ 1632.217813] br0: port 1(dummy0) entered disabled state
[ 1632.217847] dummy0: entered allmulticast mode
[ 1632.217894] dummy0: entered promiscuous mode
[ 1632.220334] br0: port 1(dummy0) entered blocking state
[ 1632.220368] br0: port 1(dummy0) entered forwarding state
[ 1632.393680] dummy0: left allmulticast mode
[ 1632.393750] dummy0: left promiscuous mode
[ 1632.393811] br0: port 1(dummy0) entered disabled state