---
ryu/lib/stplib.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/ryu/lib/stplib.py b/ryu/lib/stplib.py
index 8855cab..9fbdece 100644
--- a/ryu/lib/stplib.py
+++ b/ryu/lib/stplib.py
@@ -1151,7 +1151,10 @@ class OfCtl_v1_2later(OfCtl_v1_0):
config = {ofproto_v1_2: PORT_CONFIG_V1_2,
ofproto_v1_3: PORT_CONFIG_V1_3}
- mask = 0b1111111
+ # Only turn on the relevant bits defined on OpenFlow 1.2+, otherwise
+ # some switch that follows the specification strictly will report
+ # OFPPMFC_BAD_CONFIG error.
+ mask = 0b1100101
msg = parser.OFPPortMod(self.dp, port.port_no, port.hw_addr,
config[ofp][state], mask, port.advertised)
self.dp.send_msg(msg)
--
1.8.5.5
------------------------------------------------------------------------------
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