Fix upstream issue in resolve chaining

0001-fix-resolve-chaining.patch

@@ -0,0 +1,25 @@
+From 40af5eb2ede53e7b2e504d8049a17f95b0e45bbf Mon Sep 17 00:00:00 2001
+From: Lumir Balhar <lbalhar@redhat.com>
+Date: Fri, 27 Nov 2020 11:12:39 +0100
+Subject: [PATCH] fix resolve chaining
+
+---
+ dns/message.py | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/dns/message.py b/dns/message.py
+index 9824e70..7b99431 100644
+--- a/dns/message.py
++++ b/dns/message.py
+@@ -776,6 +776,8 @@ class QueryMessage(Message):
+                     except KeyError:
+                         # Exit the chaining loop
+                         break
++                else:
++                    count += 1
+         if count >= MAX_CHAIN:
+             raise ChainTooLong
+         if self.rcode() == dns.rcode.NXDOMAIN and rrset is not None:
+-- 
+2.28.0
+

python-dns.spec

@@ -4,7 +4,7 @@
 
 Name:           python-%{py_package_name}
 Version:        2.1.0
-Release:        0.1.%{rctag}%{?dist}
+Release:        0.2.%{rctag}%{?dist}
 Summary:        DNS toolkit for Python
 
 # The entire package is licensed with both licenses, see LICENSE file
@@ -12,7 +12,8 @@ License:        ISC and MIT
 URL:            http://www.dnspython.org
 
 Source0:        https://github.com/rthalley/%{pypi_name}/archive/v%{version}%{rctag}/%{pypi_name}-%{version}%{rctag}.tar.gz
-
+# Fix proposed upstream: https://github.com/rthalley/dnspython/issues/610#issuecomment-734704756
+Patch0:         0001-fix-resolve-chaining.patch
 BuildArch:      noarch
 
 BuildRequires:  python3-devel
@@ -71,6 +72,9 @@ find examples -type f | xargs chmod a-x
 %{python3_sitelib}/%{pypi_name}-*.egg-info
 
 %changelog
+* Fri Nov 27 2020 Lumír Balhar <lbalhar@redhat.com> - 2.1.0-0.2.rc1
+- Fix upstream issue in resolve chaining
+
 * Wed Nov 18 2020 Lumír Balhar <lbalhar@redhat.com> - 2.1.0-0.1.rc1
 - Update to 2.1.0-0.1.rc1 (#1893295)