diff --git a/df_datalink_sp/src/networking/link_layer/link_layer.c b/df_datalink_sp/src/networking/link_layer/link_layer.c
index a986b08..ae17e87 100644
--- a/df_datalink_sp/src/networking/link_layer/link_layer.c
+++ b/df_datalink_sp/src/networking/link_layer/link_layer.c
@@ -1128,15 +1128,6 @@ static int32_t Linklayer_Routine(L2_INST *instPtr)
 	ASSERT(instPtr != NULL);
 	int32_t Status;
 	uint32_t tableIndx, entryIndx;
-	
-	// FIXME: Consider time wrapping.
-	uint32_t nextTimeUnit = (TimeCtrl_GetIntCnt(instPtr->config.tmcInstPtr) + 1) / L2_SLOTS_PER_FRAME;
-	if (nextTimeUnit < instPtr->netStartTime)
-	{
-		DBG_WARNING("Linklayer not start yet, next time unit: %u, start time unit: %u.\n",
-					nextTimeUnit, instPtr->netStartTime);
-		return EIGNORE;
-	}
 
 	// Determine which routine entry is going to be performed.
 	tableIndx = L2_GetNextFrameNum(instPtr) % instPtr->rtneConfig.rtnePrd;
@@ -1217,6 +1208,15 @@ int32_t Linklayer_Proc(L2_INST *instPtr)
 		return SUCCESS;
 	}
 
+	// FIXME: Consider time wrapping.
+	uint32_t nextTimeUnit = (TimeCtrl_GetIntCnt(instPtr->config.tmcInstPtr) + 1) / L2_SLOTS_PER_FRAME;
+	if (nextTimeUnit < instPtr->netStartTime)
+	{
+		DBG_WARNING("Linklayer not start yet, next time unit: %u, start time unit: %u.\n",
+					nextTimeUnit, instPtr->netStartTime);
+		return EIGNORE;
+	}
+
 	// Update slot number.
 	L2_UpdateSlotNum(instPtr);