+dnl OpenFlow 1.1 uses OFPIT_WRITE_METADATA to express the NXAST_WRITE_METADATA
+dnl action instead, so parse-ofp11-actions will recognise and drop this action.
+# actions=write_metadata:0xfedcba9876543210
+# 0: ff -> (none)
+# 1: ff -> (none)
+# 2: 00 -> (none)
+# 3: 20 -> (none)
+# 4: 00 -> (none)
+# 5: 00 -> (none)
+# 6: 23 -> (none)
+# 7: 20 -> (none)
+# 8: 00 -> (none)
+# 9: 16 -> (none)
+# 10: 00 -> (none)
+# 11: 00 -> (none)
+# 12: 00 -> (none)
+# 13: 00 -> (none)
+# 14: 00 -> (none)
+# 15: 00 -> (none)
+# 16: fe -> (none)
+# 17: dc -> (none)
+# 18: ba -> (none)
+# 19: 98 -> (none)
+# 20: 76 -> (none)
+# 21: 54 -> (none)
+# 22: 32 -> (none)
+# 23: 10 -> (none)
+# 24: ff -> (none)
+# 25: ff -> (none)
+# 26: ff -> (none)
+# 27: ff -> (none)
+# 28: ff -> (none)
+# 29: ff -> (none)
+# 30: ff -> (none)
+# 31: ff -> (none)
+ffff 0020 00002320 0016 000000000000 fedcba9876543210 ffffffffffffffff
+
+dnl Write-Metadata duplicated.
+& ofp_actions|WARN|duplicate write_metadata instruction not allowed, for OpenFlow 1.1+ compatibility
+# bad OF1.1 actions: OFPBAC_UNSUPPORTED_ORDER
+ffff 0020 00002320 0016 000000000000 fedcba9876543210 ffffffffffffffff ffff 0020 00002320 0016 000000000000 fedcba9876543210 ffffffffffffffff
+
+dnl Write-Metadata in wrong position.
+& ofp_actions|WARN|invalid instruction ordering: apply_actions must appear before write_metadata, for OpenFlow 1.1+ compatibility
+# bad OF1.1 actions: OFPBAC_UNSUPPORTED_ORDER
+ffff 0020 00002320 0016 000000000000 fedcba9876543210 ffffffffffffffff ffff 0010 00002320 0002 0000 12345678
+