[ 1938.209912] br0: port 1(dummy0) entered blocking state
[ 1938.209949] br0: port 1(dummy0) entered disabled state
[ 1938.209976] dummy0: entered allmulticast mode
[ 1938.210046] dummy0: entered promiscuous mode
[ 1938.214171] br0: port 1(dummy0) entered blocking state
[ 1938.214201] br0: port 1(dummy0) entered forwarding state
[ 1938.514338] dummy0: left allmulticast mode
[ 1938.514432] dummy0: left promiscuous mode
[ 1938.514461] br0: port 1(dummy0) entered disabled state