[ 1628.186052] br0: port 1(dummy0) entered blocking state
[ 1628.186101] br0: port 1(dummy0) entered disabled state
[ 1628.186136] dummy0: entered allmulticast mode
[ 1628.186189] dummy0: entered promiscuous mode
[ 1628.188958] br0: port 1(dummy0) entered blocking state
[ 1628.188995] br0: port 1(dummy0) entered forwarding state
[ 1628.374579] dummy0: left allmulticast mode
[ 1628.374654] dummy0: left promiscuous mode
[ 1628.374714] br0: port 1(dummy0) entered disabled state