Datapath.send_packet_out() requires buffer_id, not dpid.
> Traceback (most recent call last):
> File "/usr/lib/pymodules/python2.7/gevent/greenlet.py", line 390, in run
> result = self._run(*self.args, **self.kwargs)
> File "ryu/base/app_manager.py", line 126, in _event_loop
> handler(ev)
> File "/ryu/topology/switches.py", line 697, in packet_in_handler
> self._drop_packet(msg)
> File "/ryu/topology/switches.py", line 640, in _drop_packet
> dp.send_packet_out(dp.id, msg.in_port, [])
> File "/ryu/controller/controller.py", line 242, in send_packet_out
> self.send_msg(packet_out)
> File "/ryu/controller/controller.py", line 216, in send_msg
> msg.serialize()
> File "/ryu/ofproto/ofproto_parser.py", line 119, in serialize
> self._serialize_body()
> File "/ryu/ofproto/ofproto_v1_0_parser.py", line 1987, in _serialize_body
> self.buffer_id, self.in_port, self.actions_len)
> File "/ryu/ofproto/ofproto_parser.py", line 128, in msg_pack_into
> buf += struct.pack(fmt, *args)
> error: 'I' format requires 0 <= number <= 4294967295
> <Greenlet at 0x229bd98: <bound method Switches._event_loop of <switches.Switches object at 0x1c8e690>>> failed with error
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>