[ 1869.416276] br0: port 1(dummy0) entered blocking state
[ 1869.416314] br0: port 1(dummy0) entered disabled state
[ 1869.416356] dummy0: entered allmulticast mode
[ 1869.416402] dummy0: entered promiscuous mode
[ 1869.419853] br0: port 1(dummy0) entered blocking state
[ 1869.419885] br0: port 1(dummy0) entered forwarding state
[ 1869.663655] dummy0: left allmulticast mode
[ 1869.663692] dummy0: left promiscuous mode
[ 1869.663775] br0: port 1(dummy0) entered disabled state