[ 1543.061440] br0: port 1(dummy0) entered blocking state
[ 1543.061514] br0: port 1(dummy0) entered disabled state
[ 1543.061585] dummy0: entered allmulticast mode
[ 1543.061670] dummy0: entered promiscuous mode
[ 1543.064619] br0: port 1(dummy0) entered blocking state
[ 1543.064649] br0: port 1(dummy0) entered forwarding state
[ 1543.254555] dummy0: left allmulticast mode
[ 1543.254591] dummy0: left promiscuous mode
[ 1543.254617] br0: port 1(dummy0) entered disabled state