[ 2233.572270] br0: port 1(dummy0) entered blocking state
[ 2233.572316] br0: port 1(dummy0) entered disabled state
[ 2233.572354] dummy0: entered allmulticast mode
[ 2233.572400] dummy0: entered promiscuous mode
[ 2233.576025] br0: port 1(dummy0) entered blocking state
[ 2233.576064] br0: port 1(dummy0) entered forwarding state
[ 2233.849185] dummy0: left allmulticast mode
[ 2233.849221] dummy0: left promiscuous mode
[ 2233.849252] br0: port 1(dummy0) entered disabled state