[ 1668.625274] br0: port 1(dummy0) entered blocking state
[ 1668.625316] br0: port 1(dummy0) entered disabled state
[ 1668.625355] dummy0: entered allmulticast mode
[ 1668.625408] dummy0: entered promiscuous mode
[ 1668.628158] br0: port 1(dummy0) entered blocking state
[ 1668.628222] br0: port 1(dummy0) entered forwarding state
[ 1668.822985] dummy0: left allmulticast mode
[ 1668.823078] dummy0: left promiscuous mode
[ 1668.823138] br0: port 1(dummy0) entered disabled state