diff --git a/openflow_input/bsn_pktin_flag b/openflow_input/bsn_pktin_flag
index 71a4be1..034ac0a 100644
--- a/openflow_input/bsn_pktin_flag
+++ b/openflow_input/bsn_pktin_flag
@@ -44,4 +44,5 @@
     OFP_BSN_PKTIN_FLAG_L3_MISS = 0x100,
     OFP_BSN_PKTIN_FLAG_L3_CPU = 0x200,
     OFP_BSN_PKTIN_FLAG_INGRESS_ACL = 0x400,
+    OFP_BSN_PKTIN_FLAG_SFLOW = 0x800,
 };