[ 1558.269053] br0: port 1(dummy0) entered blocking state
[ 1558.269081] br0: port 1(dummy0) entered disabled state
[ 1558.269100] dummy0: entered allmulticast mode
[ 1558.269131] dummy0: entered promiscuous mode
[ 1558.271737] br0: port 1(dummy0) entered blocking state
[ 1558.271757] br0: port 1(dummy0) entered forwarding state
[ 1558.458026] dummy0: left allmulticast mode
[ 1558.458049] dummy0: left promiscuous mode
[ 1558.458077] br0: port 1(dummy0) entered disabled state