[ 1754.750432] br0: port 1(dummy0) entered blocking state
[ 1754.750512] br0: port 1(dummy0) entered disabled state
[ 1754.750582] dummy0: entered allmulticast mode
[ 1754.750677] dummy0: entered promiscuous mode
[ 1754.753454] br0: port 1(dummy0) entered blocking state
[ 1754.753487] br0: port 1(dummy0) entered forwarding state
[ 1754.947051] dummy0: left allmulticast mode
[ 1754.947089] dummy0: left promiscuous mode
[ 1754.947176] br0: port 1(dummy0) entered disabled state