[ 1888.419855] br0: port 1(dummy0) entered blocking state
[ 1888.419902] br0: port 1(dummy0) entered disabled state
[ 1888.419936] dummy0: entered allmulticast mode
[ 1888.419983] dummy0: entered promiscuous mode
[ 1888.423597] br0: port 1(dummy0) entered blocking state
[ 1888.423659] br0: port 1(dummy0) entered forwarding state
[ 1888.699522] dummy0: left allmulticast mode
[ 1888.699562] dummy0: left promiscuous mode
[ 1888.699595] br0: port 1(dummy0) entered disabled state