[ 1892.390786] br0: port 1(dummy0) entered blocking state
[ 1892.390825] br0: port 1(dummy0) entered disabled state
[ 1892.390863] dummy0: entered allmulticast mode
[ 1892.390914] dummy0: entered promiscuous mode
[ 1892.394364] br0: port 1(dummy0) entered blocking state
[ 1892.394430] br0: port 1(dummy0) entered forwarding state
[ 1892.653895] dummy0: left allmulticast mode
[ 1892.653928] dummy0: left promiscuous mode
[ 1892.653959] br0: port 1(dummy0) entered disabled state