[ 1915.784550] br0: port 1(dummy0) entered blocking state
[ 1915.784594] br0: port 1(dummy0) entered disabled state
[ 1915.784631] dummy0: entered allmulticast mode
[ 1915.784681] dummy0: entered promiscuous mode
[ 1915.788287] br0: port 1(dummy0) entered blocking state
[ 1915.788320] br0: port 1(dummy0) entered forwarding state
[ 1916.043864] dummy0: left allmulticast mode
[ 1916.043903] dummy0: left promiscuous mode
[ 1916.043993] br0: port 1(dummy0) entered disabled state