[ 1754.157301] br0: port 1(dummy0) entered blocking state
[ 1754.157353] br0: port 1(dummy0) entered disabled state
[ 1754.157391] dummy0: entered allmulticast mode
[ 1754.157443] dummy0: entered promiscuous mode
[ 1754.161211] br0: port 1(dummy0) entered blocking state
[ 1754.161250] br0: port 1(dummy0) entered forwarding state
[ 1754.441537] dummy0: left allmulticast mode
[ 1754.441606] dummy0: left promiscuous mode
[ 1754.441633] br0: port 1(dummy0) entered disabled state