[ 1701.655821] br0: port 1(dummy0) entered blocking state
[ 1701.655849] br0: port 1(dummy0) entered disabled state
[ 1701.655876] dummy0: entered allmulticast mode
[ 1701.655912] dummy0: entered promiscuous mode
[ 1701.658605] br0: port 1(dummy0) entered blocking state
[ 1701.658654] br0: port 1(dummy0) entered forwarding state
[ 1701.841645] dummy0: left allmulticast mode
[ 1701.841670] dummy0: left promiscuous mode
[ 1701.841690] br0: port 1(dummy0) entered disabled state