[ 1755.331758] br0: port 1(dummy0) entered blocking state
[ 1755.331811] br0: port 1(dummy0) entered disabled state
[ 1755.331847] dummy0: entered allmulticast mode
[ 1755.331895] dummy0: entered promiscuous mode
[ 1755.335082] br0: port 1(dummy0) entered blocking state
[ 1755.335111] br0: port 1(dummy0) entered forwarding state
[ 1755.560568] dummy0: left allmulticast mode
[ 1755.560599] dummy0: left promiscuous mode
[ 1755.560637] br0: port 1(dummy0) entered disabled state