[ 1628.485036] br0: port 1(dummy0) entered blocking state
[ 1628.485108] br0: port 1(dummy0) entered disabled state
[ 1628.485178] dummy0: entered allmulticast mode
[ 1628.485269] dummy0: entered promiscuous mode
[ 1628.488200] br0: port 1(dummy0) entered blocking state
[ 1628.488245] br0: port 1(dummy0) entered forwarding state
[ 1628.679878] dummy0: left allmulticast mode
[ 1628.679944] dummy0: left promiscuous mode
[ 1628.680014] br0: port 1(dummy0) entered disabled state