[ 1668.211835] br0: port 1(dummy0) entered blocking state
[ 1668.211876] br0: port 1(dummy0) entered disabled state
[ 1668.211908] dummy0: entered allmulticast mode
[ 1668.211967] dummy0: entered promiscuous mode
[ 1668.214485] br0: port 1(dummy0) entered blocking state
[ 1668.214547] br0: port 1(dummy0) entered forwarding state
[ 1668.404003] dummy0: left allmulticast mode
[ 1668.404052] dummy0: left promiscuous mode
[ 1668.404080] br0: port 1(dummy0) entered disabled state