[ 1611.201434] br0: port 1(dummy0) entered blocking state
[ 1611.201508] br0: port 1(dummy0) entered disabled state
[ 1611.201574] dummy0: entered allmulticast mode
[ 1611.201663] dummy0: entered promiscuous mode
[ 1611.204196] br0: port 1(dummy0) entered blocking state
[ 1611.204233] br0: port 1(dummy0) entered forwarding state
[ 1611.381458] dummy0: left allmulticast mode
[ 1611.381491] dummy0: left promiscuous mode
[ 1611.381517] br0: port 1(dummy0) entered disabled state