[ 1869.324109] br0: port 1(dummy0) entered blocking state
[ 1869.324152] br0: port 1(dummy0) entered disabled state
[ 1869.324193] dummy0: entered allmulticast mode
[ 1869.324243] dummy0: entered promiscuous mode
[ 1869.327821] br0: port 1(dummy0) entered blocking state
[ 1869.327858] br0: port 1(dummy0) entered forwarding state
[ 1869.587366] dummy0: left allmulticast mode
[ 1869.587402] dummy0: left promiscuous mode
[ 1869.587433] br0: port 1(dummy0) entered disabled state