[ 1797.176960] br0: port 1(dummy0) entered blocking state
[ 1797.177037] br0: port 1(dummy0) entered disabled state
[ 1797.177111] dummy0: entered allmulticast mode
[ 1797.177199] dummy0: entered promiscuous mode
[ 1797.181554] br0: port 1(dummy0) entered blocking state
[ 1797.181638] br0: port 1(dummy0) entered forwarding state
[ 1797.469348] dummy0: left allmulticast mode
[ 1797.469391] dummy0: left promiscuous mode
[ 1797.469470] br0: port 1(dummy0) entered disabled state