From f6d5ce3383173f0278079358dde58edfac3e3ac5 Mon Sep 17 00:00:00 2001
From: Richard Hansen <rhansen@rhansen.org>
Date: Sat, 13 Jun 2020 11:47:45 -0400
Subject: [PATCH] Fix global fallback when host-specific setting is undefined

This commit only changes behavior if the hostname is a falsy string
(`''` or `'0'`) and there is a variable that:
  * was not set globally before the host definition,
  * was not set in the host definition,
  * was set globally after the host definition, and
  * is relevant to the host.
---
 ddclient | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ddclient b/ddclient
index ccd55a6..517abca 100755
--- a/ddclient
+++ b/ddclient
@@ -1708,7 +1708,7 @@ sub minimum {
 sub opt {
     my $v = shift;
     my $h = shift;
-    return $config{$h}{$v} if defined($h && $config{$h}{$v});
+    return $config{$h}{$v} if defined($h) && defined($config{$h}{$v});
     return $opt{$v}        if defined $opt{$v};
     return $globals{$v}    if defined $globals{$v};
     return default($v)     if defined default($v);