[ 1727.014267] br0: port 1(dummy0) entered blocking state
[ 1727.014299] br0: port 1(dummy0) entered disabled state
[ 1727.014330] dummy0: entered allmulticast mode
[ 1727.014383] dummy0: entered promiscuous mode
[ 1727.017080] br0: port 1(dummy0) entered blocking state
[ 1727.017142] br0: port 1(dummy0) entered forwarding state
[ 1727.203284] dummy0: left allmulticast mode
[ 1727.203349] dummy0: left promiscuous mode
[ 1727.203437] br0: port 1(dummy0) entered disabled state