[ 1743.665731] br0: port 1(dummy0) entered blocking state
[ 1743.665803] br0: port 1(dummy0) entered disabled state
[ 1743.665870] dummy0: entered allmulticast mode
[ 1743.665964] dummy0: entered promiscuous mode
[ 1743.668756] br0: port 1(dummy0) entered blocking state
[ 1743.668790] br0: port 1(dummy0) entered forwarding state
[ 1743.862524] dummy0: left allmulticast mode
[ 1743.862562] dummy0: left promiscuous mode
[ 1743.862643] br0: port 1(dummy0) entered disabled state