[ 1715.287650] br0: port 1(dummy0) entered blocking state
[ 1715.287692] br0: port 1(dummy0) entered disabled state
[ 1715.287730] dummy0: entered allmulticast mode
[ 1715.287782] dummy0: entered promiscuous mode
[ 1715.290432] br0: port 1(dummy0) entered blocking state
[ 1715.290462] br0: port 1(dummy0) entered forwarding state
[ 1715.471871] dummy0: left allmulticast mode
[ 1715.471933] dummy0: left promiscuous mode
[ 1715.471964] br0: port 1(dummy0) entered disabled state