[ 1690.185185] br0: port 1(dummy0) entered blocking state
[ 1690.185227] br0: port 1(dummy0) entered disabled state
[ 1690.185255] dummy0: entered allmulticast mode
[ 1690.185303] dummy0: entered promiscuous mode
[ 1690.188070] br0: port 1(dummy0) entered blocking state
[ 1690.188131] br0: port 1(dummy0) entered forwarding state
[ 1690.385088] dummy0: left allmulticast mode
[ 1690.385175] dummy0: left promiscuous mode
[ 1690.385244] br0: port 1(dummy0) entered disabled state