[ 1803.569212] br0: port 1(dummy0) entered blocking state
[ 1803.569251] br0: port 1(dummy0) entered disabled state
[ 1803.569287] dummy0: entered allmulticast mode
[ 1803.569338] dummy0: entered promiscuous mode
[ 1803.572751] br0: port 1(dummy0) entered blocking state
[ 1803.572816] br0: port 1(dummy0) entered forwarding state
[ 1803.800502] dummy0: left allmulticast mode
[ 1803.800537] dummy0: left promiscuous mode
[ 1803.800570] br0: port 1(dummy0) entered disabled state