[ 2193.108180][T31455] br0: port 1(dummy0) entered blocking state
[ 2193.108492][T31455] br0: port 1(dummy0) entered disabled state
[ 2193.108776][T31455] dummy0: entered allmulticast mode
[ 2193.109780][T31455] dummy0: entered promiscuous mode
[ 2193.145094][T31456] br0: port 1(dummy0) entered blocking state
[ 2193.145573][T31456] br0: port 1(dummy0) entered forwarding state
[ 2195.662423][  T449] dummy0: left allmulticast mode
[ 2195.663275][  T449] dummy0: left promiscuous mode
[ 2195.663756][  T449] br0: port 1(dummy0) entered disabled state