[ 1568.599884] br0: port 1(dummy0) entered blocking state
[ 1568.599925] br0: port 1(dummy0) entered disabled state
[ 1568.599958] dummy0: entered allmulticast mode
[ 1568.600007] dummy0: entered promiscuous mode
[ 1568.602446] br0: port 1(dummy0) entered blocking state
[ 1568.602483] br0: port 1(dummy0) entered forwarding state
[ 1568.781184] dummy0: left allmulticast mode
[ 1568.781251] dummy0: left promiscuous mode
[ 1568.781308] br0: port 1(dummy0) entered disabled state