[ 1929.917621] br0: port 1(dummy0) entered blocking state
[ 1929.917664] br0: port 1(dummy0) entered disabled state
[ 1929.917699] dummy0: entered allmulticast mode
[ 1929.917743] dummy0: entered promiscuous mode
[ 1929.921357] br0: port 1(dummy0) entered blocking state
[ 1929.921391] br0: port 1(dummy0) entered forwarding state
[ 1930.180721] dummy0: left allmulticast mode
[ 1930.180756] dummy0: left promiscuous mode
[ 1930.180811] br0: port 1(dummy0) entered disabled state