[ 2391.206764][T21997] br0: port 1(dummy0) entered blocking state
[ 2391.207073][T21997] br0: port 1(dummy0) entered disabled state
[ 2391.207346][T21997] dummy0: entered allmulticast mode
[ 2391.208338][T21997] dummy0: entered promiscuous mode
[ 2391.239372][T21998] br0: port 1(dummy0) entered blocking state
[ 2391.239681][T21998] br0: port 1(dummy0) entered forwarding state
[ 2393.625172][   T68] dummy0: left allmulticast mode
[ 2393.625518][   T68] dummy0: left promiscuous mode
[ 2393.625877][   T68] br0: port 1(dummy0) entered disabled state