[ 1568.949544] br0: port 1(dummy0) entered blocking state
[ 1568.949618] br0: port 1(dummy0) entered disabled state
[ 1568.949683] dummy0: entered allmulticast mode
[ 1568.949766] dummy0: entered promiscuous mode
[ 1568.952512] br0: port 1(dummy0) entered blocking state
[ 1568.952542] br0: port 1(dummy0) entered forwarding state
[ 1569.134604] dummy0: left allmulticast mode
[ 1569.134648] dummy0: left promiscuous mode
[ 1569.134676] br0: port 1(dummy0) entered disabled state