From e2324e8093a56cfcdceb1fb39e49342128c50acf Mon Sep 17 00:00:00 2001
From: lurchi <lurchi@strangeplace.net>
Date: Fri, 1 Mar 2019 18:55:50 +0100
Subject: [PATCH] lookup IPv4 address only when IPv6 address has changed

---
 homeserverdns-daemon | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeserverdns-daemon b/homeserverdns-daemon
index 3b06e2e..92ac93b 100755
--- a/homeserverdns-daemon
+++ b/homeserverdns-daemon
@@ -157,10 +157,10 @@ function main {
     ip -6 -o monitor address dev $(get_interface) |
     while IFS= read -r line
     do
-        ip4=$(lookup_ip4 "$(declare -p config)")
         local new_ip6=$(parse_ip_monitor_output "${line}")
         #echo "ip-monitor output was ${line}"
         if [ -n "${new_ip6}" ] && [ "${new_ip6}" != "${ip6}" ]; then
+            ip4=$(lookup_ip4 "$(declare -p config)")
             ip6=$new_ip6
             update "${ip4}" "${ip6}" "$(declare -p config)"
         fi