[ 2340.589806][T18800] br0: port 1(dummy0) entered blocking state
[ 2340.590172][T18800] br0: port 1(dummy0) entered disabled state
[ 2340.590513][T18800] dummy0: entered allmulticast mode
[ 2340.591594][T18800] dummy0: entered promiscuous mode
[ 2340.619696][T18801] br0: port 1(dummy0) entered blocking state
[ 2340.620465][T18801] br0: port 1(dummy0) entered forwarding state
[ 2343.193434][   T12] dummy0: left allmulticast mode
[ 2343.194484][   T12] dummy0: left promiscuous mode
[ 2343.194842][   T12] br0: port 1(dummy0) entered disabled state