[ 1805.476740] br0: port 1(dummy0) entered blocking state
[ 1805.476789] br0: port 1(dummy0) entered disabled state
[ 1805.476828] dummy0: entered allmulticast mode
[ 1805.476885] dummy0: entered promiscuous mode
[ 1805.479415] br0: port 1(dummy0) entered blocking state
[ 1805.479454] br0: port 1(dummy0) entered forwarding state
[ 1805.675477] dummy0: left allmulticast mode
[ 1805.675513] dummy0: left promiscuous mode
[ 1805.675545] br0: port 1(dummy0) entered disabled state