[ 1667.590318] br0: port 1(dummy0) entered blocking state
[ 1667.590366] br0: port 1(dummy0) entered disabled state
[ 1667.590399] dummy0: entered allmulticast mode
[ 1667.590451] dummy0: entered promiscuous mode
[ 1667.593149] br0: port 1(dummy0) entered blocking state
[ 1667.593211] br0: port 1(dummy0) entered forwarding state
[ 1667.790801] dummy0: left allmulticast mode
[ 1667.790878] dummy0: left promiscuous mode
[ 1667.790956] br0: port 1(dummy0) entered disabled state