[ 1805.833704] br0: port 1(dummy0) entered blocking state
[ 1805.833750] br0: port 1(dummy0) entered disabled state
[ 1805.833783] dummy0: entered allmulticast mode
[ 1805.833827] dummy0: entered promiscuous mode
[ 1805.836540] br0: port 1(dummy0) entered blocking state
[ 1805.836572] br0: port 1(dummy0) entered forwarding state
[ 1806.012757] dummy0: left allmulticast mode
[ 1806.012788] dummy0: left promiscuous mode
[ 1806.012817] br0: port 1(dummy0) entered disabled state