[ 1603.619764] br0: port 1(dummy0) entered blocking state
[ 1603.619813] br0: port 1(dummy0) entered disabled state
[ 1603.619846] dummy0: entered allmulticast mode
[ 1603.619900] dummy0: entered promiscuous mode
[ 1603.622787] br0: port 1(dummy0) entered blocking state
[ 1603.622818] br0: port 1(dummy0) entered forwarding state
[ 1603.808763] dummy0: left allmulticast mode
[ 1603.808794] dummy0: left promiscuous mode
[ 1603.808826] br0: port 1(dummy0) entered disabled state