[ 1628.177876] br0: port 1(dummy0) entered blocking state
[ 1628.177919] br0: port 1(dummy0) entered disabled state
[ 1628.177956] dummy0: entered allmulticast mode
[ 1628.178020] dummy0: entered promiscuous mode
[ 1628.181411] br0: port 1(dummy0) entered blocking state
[ 1628.181444] br0: port 1(dummy0) entered forwarding state
[ 1628.395764] dummy0: left allmulticast mode
[ 1628.395799] dummy0: left promiscuous mode
[ 1628.395832] br0: port 1(dummy0) entered disabled state