[ 1793.068460] br0: port 1(dummy0) entered blocking state
[ 1793.068491] br0: port 1(dummy0) entered disabled state
[ 1793.068514] dummy0: entered allmulticast mode
[ 1793.068548] dummy0: entered promiscuous mode
[ 1793.071699] br0: port 1(dummy0) entered blocking state
[ 1793.071748] br0: port 1(dummy0) entered forwarding state
[ 1793.313752] dummy0: left allmulticast mode
[ 1793.313779] dummy0: left promiscuous mode
[ 1793.313801] br0: port 1(dummy0) entered disabled state