[ 1622.258000] br0: port 1(dummy0) entered blocking state
[ 1622.258049] br0: port 1(dummy0) entered disabled state
[ 1622.258082] dummy0: entered allmulticast mode
[ 1622.258130] dummy0: entered promiscuous mode
[ 1622.260553] br0: port 1(dummy0) entered blocking state
[ 1622.260587] br0: port 1(dummy0) entered forwarding state
[ 1622.432885] dummy0: left allmulticast mode
[ 1622.432916] dummy0: left promiscuous mode
[ 1622.432942] br0: port 1(dummy0) entered disabled state