[ 1751.550024] br0: port 1(dummy0) entered blocking state
[ 1751.550066] br0: port 1(dummy0) entered disabled state
[ 1751.550105] dummy0: entered allmulticast mode
[ 1751.550165] dummy0: entered promiscuous mode
[ 1751.553620] br0: port 1(dummy0) entered blocking state
[ 1751.553650] br0: port 1(dummy0) entered forwarding state
[ 1751.803135] dummy0: left allmulticast mode
[ 1751.803165] dummy0: left promiscuous mode
[ 1751.803195] br0: port 1(dummy0) entered disabled state