[ 1678.094454] br0: port 1(dummy0) entered blocking state
[ 1678.094497] br0: port 1(dummy0) entered disabled state
[ 1678.094532] dummy0: entered allmulticast mode
[ 1678.094582] dummy0: entered promiscuous mode
[ 1678.097376] br0: port 1(dummy0) entered blocking state
[ 1678.097442] br0: port 1(dummy0) entered forwarding state
[ 1678.292538] dummy0: left allmulticast mode
[ 1678.292567] dummy0: left promiscuous mode
[ 1678.292592] br0: port 1(dummy0) entered disabled state