[ 2056.669082][ T3880] br0: port 1(dummy0) entered blocking state
[ 2056.669276][ T3880] br0: port 1(dummy0) entered disabled state
[ 2056.669434][ T3880] dummy0: entered allmulticast mode
[ 2056.670291][ T3880] dummy0: entered promiscuous mode
[ 2056.705649][ T3881] br0: port 1(dummy0) entered blocking state
[ 2056.705984][ T3881] br0: port 1(dummy0) entered forwarding state
[ 2058.668565][   T68] dummy0: left allmulticast mode
[ 2058.668760][   T68] dummy0: left promiscuous mode
[ 2058.669003][   T68] br0: port 1(dummy0) entered disabled state