From: Brian Wellington <bwelling@xbill.org>
Date: Tue, 7 Jul 2020 20:42:48 +0000 (-0700)
Subject: Fix Message ednsflags propery setter.
X-Git-Tag: v2.0.0~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=172c357dc70420a2ce2fbe88a18ee439b945c3be;p=thirdparty%2Fdnspython.git

Fix Message ednsflags propery setter.

Setting ednsflags to 0 shouldn't unconditionally enable EDNS.
---

diff --git a/dns/message.py b/dns/message.py
index 1bb02ae2..60b74c19 100644
--- a/dns/message.py
+++ b/dns/message.py
@@ -614,7 +614,7 @@ class Message:
     def ednsflags(self, v):
         if self.opt:
             self.opt.ttl = v
-        else:
+        elif v:
             self.opt = self._make_opt(v)
 
     @property