[ 1934.884463] br0: port 1(dummy0) entered blocking state
[ 1934.884545] br0: port 1(dummy0) entered disabled state
[ 1934.884613] dummy0: entered allmulticast mode
[ 1934.884700] dummy0: entered promiscuous mode
[ 1934.888213] br0: port 1(dummy0) entered blocking state
[ 1934.888245] br0: port 1(dummy0) entered forwarding state
[ 1935.138438] dummy0: left allmulticast mode
[ 1935.138472] dummy0: left promiscuous mode
[ 1935.138504] br0: port 1(dummy0) entered disabled state