[ 1579.547854] br0: port 1(dummy0) entered blocking state
[ 1579.547932] br0: port 1(dummy0) entered disabled state
[ 1579.548003] dummy0: entered allmulticast mode
[ 1579.548092] dummy0: entered promiscuous mode
[ 1579.550976] br0: port 1(dummy0) entered blocking state
[ 1579.551009] br0: port 1(dummy0) entered forwarding state
[ 1579.743383] dummy0: left allmulticast mode
[ 1579.743422] dummy0: left promiscuous mode
[ 1579.743452] br0: port 1(dummy0) entered disabled state