[ 1800.906867] br0: port 1(dummy0) entered blocking state
[ 1800.906948] br0: port 1(dummy0) entered disabled state
[ 1800.907017] dummy0: entered allmulticast mode
[ 1800.907107] dummy0: entered promiscuous mode
[ 1800.910510] br0: port 1(dummy0) entered blocking state
[ 1800.910546] br0: port 1(dummy0) entered forwarding state
[ 1801.129998] dummy0: left allmulticast mode
[ 1801.130093] dummy0: left promiscuous mode
[ 1801.130163] br0: port 1(dummy0) entered disabled state