From 669959e4d213ed943cb534337eef670de9a40c60 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Thu, 20 Feb 2020 21:53:45 +0100
Subject: update-ddns: -f new

---
 update-ddns.in | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/update-ddns.in b/update-ddns.in
index 9038819..3d005c1 100644
--- a/update-ddns.in
+++ b/update-ddns.in
@@ -17,6 +17,13 @@ if ! ipCmd=$(which ip 2> /dev/null); then
   done
 fi
 
+if [ "x$1" = 'x-f' ]; then
+  force_update=true
+  shift
+else
+  force_update=false
+fi
+
 sed '
   /^\(#\|\s\)/ d
   s/^\([46]!\?\)\([46]!\?\)\(\s.*$\)/\1\3\n\2\3/
@@ -89,7 +96,7 @@ sed '
     fi
   fi
 
-  [ "${dnsIps}" = "${ips}" ] && continue
+  ! "${force_update}" && [ "${dnsIps}" = "${ips}" ] && continue
 
   if [ -z "${updateUrl##*?*}" ]; then
     updateIps='&address='"${updateIps}"
-- 
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