[ 1927.844691] br0: port 1(dummy0) entered blocking state
[ 1927.844739] br0: port 1(dummy0) entered disabled state
[ 1927.844781] dummy0: entered allmulticast mode
[ 1927.844834] dummy0: entered promiscuous mode
[ 1927.848360] br0: port 1(dummy0) entered blocking state
[ 1927.848421] br0: port 1(dummy0) entered forwarding state
[ 1928.099406] dummy0: left allmulticast mode
[ 1928.099437] dummy0: left promiscuous mode
[ 1928.099467] br0: port 1(dummy0) entered disabled state