[ 1647.941353] br0: port 1(dummy0) entered blocking state
[ 1647.941402] br0: port 1(dummy0) entered disabled state
[ 1647.941440] dummy0: entered allmulticast mode
[ 1647.941489] dummy0: entered promiscuous mode
[ 1647.944345] br0: port 1(dummy0) entered blocking state
[ 1647.944417] br0: port 1(dummy0) entered forwarding state
[ 1648.143127] dummy0: left allmulticast mode
[ 1648.143158] dummy0: left promiscuous mode
[ 1648.143188] br0: port 1(dummy0) entered disabled state