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-rw-r--r--ryu/controller/controller.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/ryu/controller/controller.py b/ryu/controller/controller.py
index 8300f1a8..62bca5fb 100644
--- a/ryu/controller/controller.py
+++ b/ryu/controller/controller.py
@@ -48,9 +48,12 @@ from ryu.lib.dpid import dpid_to_str
LOG = logging.getLogger('ryu.controller.controller')
+DEFAULT_OFP_HOST = '0.0.0.0'
+
CONF = cfg.CONF
CONF.register_cli_opts([
- cfg.StrOpt('ofp-listen-host', default='', help='openflow listen host'),
+ cfg.StrOpt('ofp-listen-host', default=DEFAULT_OFP_HOST,
+ help='openflow listen host (default %s)' % DEFAULT_OFP_HOST),
cfg.IntOpt('ofp-tcp-listen-port', default=None,
help='openflow tcp listen port '
'(default: %d)' % ofproto_common.OFP_TCP_PORT),