[ 2049.270579][T29972] br0: port 1(dummy0) entered blocking state
[ 2049.270772][T29972] br0: port 1(dummy0) entered disabled state
[ 2049.270934][T29972] dummy0: entered allmulticast mode
[ 2049.271793][T29972] dummy0: entered promiscuous mode
[ 2049.300577][T29973] br0: port 1(dummy0) entered blocking state
[ 2049.300760][T29973] br0: port 1(dummy0) entered forwarding state
[ 2051.300848][   T12] dummy0: left allmulticast mode
[ 2051.301040][   T12] dummy0: left promiscuous mode
[ 2051.301262][   T12] br0: port 1(dummy0) entered disabled state