[ 2154.360521][T17820] br0: port 1(dummy0) entered blocking state
[ 2154.360793][T17820] br0: port 1(dummy0) entered disabled state
[ 2154.361013][T17820] dummy0: entered allmulticast mode
[ 2154.362690][T17820] dummy0: entered promiscuous mode
[ 2154.410100][T17821] br0: port 1(dummy0) entered blocking state
[ 2154.410652][T17821] br0: port 1(dummy0) entered forwarding state
[ 2157.069163][   T69] dummy0: left allmulticast mode
[ 2157.070345][   T69] dummy0: left promiscuous mode
[ 2157.070669][   T69] br0: port 1(dummy0) entered disabled state