[ 1805.881979] br0: port 1(dummy0) entered blocking state
[ 1805.882023] br0: port 1(dummy0) entered disabled state
[ 1805.882063] dummy0: entered allmulticast mode
[ 1805.882112] dummy0: entered promiscuous mode
[ 1805.884871] br0: port 1(dummy0) entered blocking state
[ 1805.884935] br0: port 1(dummy0) entered forwarding state
[ 1806.075491] dummy0: left allmulticast mode
[ 1806.075528] dummy0: left promiscuous mode
[ 1806.075589] br0: port 1(dummy0) entered disabled state