[ 1996.418492] br0: port 1(dummy0) entered blocking state
[ 1996.418538] br0: port 1(dummy0) entered disabled state
[ 1996.418570] dummy0: entered allmulticast mode
[ 1996.418635] dummy0: entered promiscuous mode
[ 1996.422420] br0: port 1(dummy0) entered blocking state
[ 1996.422487] br0: port 1(dummy0) entered forwarding state
[ 1996.679449] dummy0: left allmulticast mode
[ 1996.679493] dummy0: left promiscuous mode
[ 1996.679551] br0: port 1(dummy0) entered disabled state