[ 1709.842023] br0: port 1(dummy0) entered blocking state
[ 1709.842058] br0: port 1(dummy0) entered disabled state
[ 1709.842146] dummy0: entered allmulticast mode
[ 1709.842219] dummy0: entered promiscuous mode
[ 1709.844530] br0: port 1(dummy0) entered blocking state
[ 1709.844561] br0: port 1(dummy0) entered forwarding state
[ 1710.018835] dummy0: left allmulticast mode
[ 1710.018863] dummy0: left promiscuous mode
[ 1710.018887] br0: port 1(dummy0) entered disabled state