From 1949ed9487623a1a3b1d6d1e6a8ade2f961ba752 Mon Sep 17 00:00:00 2001
From: Alexandre Dulaunoy <a@foo.be>
Date: Sat, 22 Apr 2017 11:08:50 +0200
Subject: [PATCH] Added an optional prefix to the sensor_id based on discussion
 regarding public measurement system or/and other public system gathering DNS
 passively.

---
 i-d/pdns-qof.xml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/i-d/pdns-qof.xml b/i-d/pdns-qof.xml
index 613c644..ef371e4 100644
--- a/i-d/pdns-qof.xml
+++ b/i-d/pdns-qof.xml
@@ -234,7 +234,8 @@ ws              = *(
 		<section title="Additional Fields">
 			<t>Implementations MAY support the following fields:</t>
 			<section title="sensor_id">
-			<t>This field returns the sensor information where the record was seen. It is represented as a <xref target="RFC4627">JSON</xref> string.</t>
+                    <t>This field returns the sensor information where the record was seen. It is represented as a <xref target="RFC4627">JSON</xref> string.</t>
+                    <t>If the data originate from sensors or probes which are part of a publicly-known gathering or measurement system (e.g. RIPE Atlas), a <xref target="RFC4627">JSON</xref> string SHOULD be prefixed.</t>
 		    </section>
             <section title="zone_time_first">
             <t>This field returns the first time that the unique tuple (rrname, rrtype, rdata) record has been seen via master file import. The date is expressed in seconds (decimal) since 1st of January 1970 (Unix timestamp). The time zone MUST be UTC. This field is represented as a <xref target="RFC4627">JSON</xref> number.</t>