[ 1721.654215] br0: port 1(dummy0) entered blocking state
[ 1721.654292] br0: port 1(dummy0) entered disabled state
[ 1721.654363] dummy0: entered allmulticast mode
[ 1721.654452] dummy0: entered promiscuous mode
[ 1721.658022] br0: port 1(dummy0) entered blocking state
[ 1721.658061] br0: port 1(dummy0) entered forwarding state
[ 1721.926445] dummy0: left allmulticast mode
[ 1721.926482] dummy0: left promiscuous mode
[ 1721.926516] br0: port 1(dummy0) entered disabled state