[ 1631.886163] br0: port 1(dummy0) entered blocking state
[ 1631.886212] br0: port 1(dummy0) entered disabled state
[ 1631.886249] dummy0: entered allmulticast mode
[ 1631.886309] dummy0: entered promiscuous mode
[ 1631.888771] br0: port 1(dummy0) entered blocking state
[ 1631.888807] br0: port 1(dummy0) entered forwarding state
[ 1632.071756] dummy0: left allmulticast mode
[ 1632.071792] dummy0: left promiscuous mode
[ 1632.071823] br0: port 1(dummy0) entered disabled state