[ 1635.538609] br0: port 1(dummy0) entered blocking state
[ 1635.538661] br0: port 1(dummy0) entered disabled state
[ 1635.538701] dummy0: entered allmulticast mode
[ 1635.538758] dummy0: entered promiscuous mode
[ 1635.541664] br0: port 1(dummy0) entered blocking state
[ 1635.541696] br0: port 1(dummy0) entered forwarding state
[ 1635.750236] dummy0: left allmulticast mode
[ 1635.750274] dummy0: left promiscuous mode
[ 1635.750305] br0: port 1(dummy0) entered disabled state