[ 2001.333470] br0: port 1(dummy0) entered blocking state
[ 2001.333537] br0: port 1(dummy0) entered disabled state
[ 2001.333604] dummy0: entered allmulticast mode
[ 2001.333692] dummy0: entered promiscuous mode
[ 2001.336956] br0: port 1(dummy0) entered blocking state
[ 2001.336989] br0: port 1(dummy0) entered forwarding state
[ 2001.559185] dummy0: left allmulticast mode
[ 2001.559256] dummy0: left promiscuous mode
[ 2001.559359] br0: port 1(dummy0) entered disabled state