[ 1908.950139] br0: port 1(dummy0) entered blocking state
[ 1908.950205] br0: port 1(dummy0) entered disabled state
[ 1908.950273] dummy0: entered allmulticast mode
[ 1908.950355] dummy0: entered promiscuous mode
[ 1908.953863] br0: port 1(dummy0) entered blocking state
[ 1908.953929] br0: port 1(dummy0) entered forwarding state
[ 1909.212756] dummy0: left allmulticast mode
[ 1909.212818] dummy0: left promiscuous mode
[ 1909.212876] br0: port 1(dummy0) entered disabled state