From: Stefan Schmidt <203977+ZaphodB@users.noreply.github.com>
Date: Fri, 31 May 2024 10:34:54 +0000 (+0200)
Subject: rec: allow_no_rd - document cache contents on root on startup pertaining to dig ... 
X-Git-Tag: rec-5.1.0-beta1~8^2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a6dc03fb1f649d72879f6209cea354e485a882d6;p=thirdparty%2Fpdns.git

rec: allow_no_rd - document cache contents on root on startup pertaining to dig +trace
---

diff --git a/pdns/recursordist/settings/table.py b/pdns/recursordist/settings/table.py
index e16200c7d1..4772bbdc56 100644
--- a/pdns/recursordist/settings/table.py
+++ b/pdns/recursordist/settings/table.py
@@ -203,6 +203,10 @@ Like :ref:`setting-allow-notify-from`, except reading a sequence of `Subnet`_ fr
         'doc' : '''
 Allow ``no recursion desired (RD=0) queries`` to query cache contents.
 If not set (the default), these queries are answered with rcode ``Refused``.
+
+Note that there is a short while after restarting that the cache has no authoritative data on the root,
+so it will answer with an NODATA (NOERROR and no answer records) in that period for RD=0 queries
+affecting for example older versions of dig when using its +trace option.
  ''',
     'versionadded': '5.0.0'
     },