[ 1587.260460] br0: port 1(dummy0) entered blocking state
[ 1587.260509] br0: port 1(dummy0) entered disabled state
[ 1587.260542] dummy0: entered allmulticast mode
[ 1587.260594] dummy0: entered promiscuous mode
[ 1587.263193] br0: port 1(dummy0) entered blocking state
[ 1587.263257] br0: port 1(dummy0) entered forwarding state
[ 1587.454846] dummy0: left allmulticast mode
[ 1587.454881] dummy0: left promiscuous mode
[ 1587.454909] br0: port 1(dummy0) entered disabled state