> diff --git a/ryu/app/gre_tunnel.py b/ryu/app/gre_tunnel.py
> index 5fed365..75c1f71 100644
> --- a/ryu/app/gre_tunnel.py
> +++ b/ryu/app/gre_tunnel.py
> @@ -958,5 +958,5 @@ class GRETunnel(app_manager.RyuApp):
> # for debug
> msg = ev.msg
> self.logger.debug('packet in ev %s msg %s', ev, ev.msg)
> - if msg.buffer_id != 0xffffffff: # TODO:XXX use constant instead of
> -1
> + if msg.buffer_id != ev.dp.ofproto.OFP_NO_BUFFER:
> msg.datapath.send_packet_out(msg.buffer_id, msg.in_port, [])
oops, this was broken.
YAMAMOTO Takashi
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