[ 1933.601520] br0: port 1(dummy0) entered blocking state
[ 1933.601587] br0: port 1(dummy0) entered disabled state
[ 1933.601658] dummy0: entered allmulticast mode
[ 1933.601739] dummy0: entered promiscuous mode
[ 1933.605315] br0: port 1(dummy0) entered blocking state
[ 1933.605346] br0: port 1(dummy0) entered forwarding state
[ 1933.872611] dummy0: left allmulticast mode
[ 1933.872646] dummy0: left promiscuous mode
[ 1933.872732] br0: port 1(dummy0) entered disabled state