[ 1674.575853] br0: port 1(dummy0) entered blocking state
[ 1674.575899] br0: port 1(dummy0) entered disabled state
[ 1674.575929] dummy0: entered allmulticast mode
[ 1674.575985] dummy0: entered promiscuous mode
[ 1674.578430] br0: port 1(dummy0) entered blocking state
[ 1674.578491] br0: port 1(dummy0) entered forwarding state
[ 1674.755504] dummy0: left allmulticast mode
[ 1674.755533] dummy0: left promiscuous mode
[ 1674.755565] br0: port 1(dummy0) entered disabled state