[ 1886.694657] br0: port 1(dummy0) entered blocking state
[ 1886.694696] br0: port 1(dummy0) entered disabled state
[ 1886.694736] dummy0: entered allmulticast mode
[ 1886.694792] dummy0: entered promiscuous mode
[ 1886.698251] br0: port 1(dummy0) entered blocking state
[ 1886.698288] br0: port 1(dummy0) entered forwarding state
[ 1886.974675] dummy0: left allmulticast mode
[ 1886.974724] dummy0: left promiscuous mode
[ 1886.974764] br0: port 1(dummy0) entered disabled state