[ 1772.239286] br0: port 1(dummy0) entered blocking state
[ 1772.239359] br0: port 1(dummy0) entered disabled state
[ 1772.239428] dummy0: entered allmulticast mode
[ 1772.239510] dummy0: entered promiscuous mode
[ 1772.242983] br0: port 1(dummy0) entered blocking state
[ 1772.243023] br0: port 1(dummy0) entered forwarding state
[ 1772.506255] dummy0: left allmulticast mode
[ 1772.506297] dummy0: left promiscuous mode
[ 1772.506380] br0: port 1(dummy0) entered disabled state