[ 2203.950629][T20040] br0: port 1(dummy0) entered blocking state
[ 2203.950924][T20040] br0: port 1(dummy0) entered disabled state
[ 2203.951204][T20040] dummy0: entered allmulticast mode
[ 2203.952197][T20040] dummy0: entered promiscuous mode
[ 2203.990841][T20041] br0: port 1(dummy0) entered blocking state
[ 2203.991148][T20041] br0: port 1(dummy0) entered forwarding state
[ 2206.313328][   T70] dummy0: left allmulticast mode
[ 2206.314380][   T70] dummy0: left promiscuous mode
[ 2206.314713][   T70] br0: port 1(dummy0) entered disabled state