[ 1550.436341] br0: port 1(dummy0) entered blocking state
[ 1550.436417] br0: port 1(dummy0) entered disabled state
[ 1550.436492] dummy0: entered allmulticast mode
[ 1550.436589] dummy0: entered promiscuous mode
[ 1550.439182] br0: port 1(dummy0) entered blocking state
[ 1550.439215] br0: port 1(dummy0) entered forwarding state
[ 1550.624293] dummy0: left allmulticast mode
[ 1550.624365] dummy0: left promiscuous mode
[ 1550.624424] br0: port 1(dummy0) entered disabled state