[ 1588.870204] br0: port 1(dummy0) entered blocking state
[ 1588.870246] br0: port 1(dummy0) entered disabled state
[ 1588.870280] dummy0: entered allmulticast mode
[ 1588.870337] dummy0: entered promiscuous mode
[ 1588.872762] br0: port 1(dummy0) entered blocking state
[ 1588.872824] br0: port 1(dummy0) entered forwarding state
[ 1589.047728] dummy0: left allmulticast mode
[ 1589.047766] dummy0: left promiscuous mode
[ 1589.047798] br0: port 1(dummy0) entered disabled state