[ 1847.240201] br0: port 1(dummy0) entered blocking state
[ 1847.240248] br0: port 1(dummy0) entered disabled state
[ 1847.240288] dummy0: entered allmulticast mode
[ 1847.240336] dummy0: entered promiscuous mode
[ 1847.244004] br0: port 1(dummy0) entered blocking state
[ 1847.244036] br0: port 1(dummy0) entered forwarding state
[ 1847.513506] dummy0: left allmulticast mode
[ 1847.513574] dummy0: left promiscuous mode
[ 1847.513638] br0: port 1(dummy0) entered disabled state