[ 2177.234141][T16554] br0: port 1(dummy0) entered blocking state
[ 2177.234370][T16554] br0: port 1(dummy0) entered disabled state
[ 2177.234584][T16554] dummy0: entered allmulticast mode
[ 2177.235609][T16554] dummy0: entered promiscuous mode
[ 2177.261034][T16555] br0: port 1(dummy0) entered blocking state
[ 2177.261288][T16555] br0: port 1(dummy0) entered forwarding state
[ 2179.646861][   T12] dummy0: left allmulticast mode
[ 2179.647546][   T12] dummy0: left promiscuous mode
[ 2179.647796][   T12] br0: port 1(dummy0) entered disabled state