[ 1548.602191] br0: port 1(dummy0) entered blocking state
[ 1548.602268] br0: port 1(dummy0) entered disabled state
[ 1548.602335] dummy0: entered allmulticast mode
[ 1548.602418] dummy0: entered promiscuous mode
[ 1548.604960] br0: port 1(dummy0) entered blocking state
[ 1548.604997] br0: port 1(dummy0) entered forwarding state
[ 1548.777228] dummy0: left allmulticast mode
[ 1548.777271] dummy0: left promiscuous mode
[ 1548.777301] br0: port 1(dummy0) entered disabled state