[ 1941.780675] br0: port 1(dummy0) entered blocking state
[ 1941.780716] br0: port 1(dummy0) entered disabled state
[ 1941.780757] dummy0: entered allmulticast mode
[ 1941.780807] dummy0: entered promiscuous mode
[ 1941.783602] br0: port 1(dummy0) entered blocking state
[ 1941.783663] br0: port 1(dummy0) entered forwarding state
[ 1941.976788] dummy0: left allmulticast mode
[ 1941.976849] dummy0: left promiscuous mode
[ 1941.976877] br0: port 1(dummy0) entered disabled state