[ 2137.990084][T11223] br0: port 1(dummy0) entered blocking state
[ 2137.990265][T11223] br0: port 1(dummy0) entered disabled state
[ 2137.990427][T11223] dummy0: entered allmulticast mode
[ 2137.991313][T11223] dummy0: entered promiscuous mode
[ 2138.016805][T11224] br0: port 1(dummy0) entered blocking state
[ 2138.017110][T11224] br0: port 1(dummy0) entered forwarding state
[ 2140.256024][   T12] dummy0: left allmulticast mode
[ 2140.257176][   T12] dummy0: left promiscuous mode
[ 2140.257404][   T12] br0: port 1(dummy0) entered disabled state