[ 2234.819907][ T9956] br0: port 1(dummy0) entered blocking state
[ 2234.820109][ T9956] br0: port 1(dummy0) entered disabled state
[ 2234.820277][ T9956] dummy0: entered allmulticast mode
[ 2234.821314][ T9956] dummy0: entered promiscuous mode
[ 2234.852895][ T9957] br0: port 1(dummy0) entered blocking state
[ 2234.853152][ T9957] br0: port 1(dummy0) entered forwarding state
[ 2237.200433][   T12] dummy0: left allmulticast mode
[ 2237.201093][   T12] dummy0: left promiscuous mode
[ 2237.201627][   T12] br0: port 1(dummy0) entered disabled state