[ 1784.475170] br0: port 1(dummy0) entered blocking state
[ 1784.475213] br0: port 1(dummy0) entered disabled state
[ 1784.475249] dummy0: entered allmulticast mode
[ 1784.475308] dummy0: entered promiscuous mode
[ 1784.478829] br0: port 1(dummy0) entered blocking state
[ 1784.478892] br0: port 1(dummy0) entered forwarding state
[ 1784.756613] dummy0: left allmulticast mode
[ 1784.756654] dummy0: left promiscuous mode
[ 1784.756684] br0: port 1(dummy0) entered disabled state