[ 1809.554099] br0: port 1(dummy0) entered blocking state
[ 1809.554138] br0: port 1(dummy0) entered disabled state
[ 1809.554172] dummy0: entered allmulticast mode
[ 1809.554239] dummy0: entered promiscuous mode
[ 1809.556986] br0: port 1(dummy0) entered blocking state
[ 1809.557017] br0: port 1(dummy0) entered forwarding state
[ 1809.758608] dummy0: left allmulticast mode
[ 1809.758643] dummy0: left promiscuous mode
[ 1809.758675] br0: port 1(dummy0) entered disabled state