[ 1799.210593][T12217] br0: port 1(dummy0) entered blocking state
[ 1799.210732][T12217] br0: port 1(dummy0) entered disabled state
[ 1799.210838][T12217] dummy0: entered allmulticast mode
[ 1799.211327][T12217] dummy0: entered promiscuous mode
[ 1799.228965][T12218] br0: port 1(dummy0) entered blocking state
[ 1799.229129][T12218] br0: port 1(dummy0) entered forwarding state
[ 1800.373734][   T12] dummy0: left allmulticast mode
[ 1800.373867][   T12] dummy0: left promiscuous mode
[ 1800.374029][   T12] br0: port 1(dummy0) entered disabled state