From 928616e9e086a5e7a62f0d54561c641219cc6837 Mon Sep 17 00:00:00 2001
From: Harald Ringvold <harald.ringvold@gmail.com>
Date: Sat, 20 Mar 2021 21:14:24 +0100
Subject: [PATCH] Fix IP check for the case where all services fail

Last commit would still not fix the problem if all services fails
because of the check on line 38.
---
 dyndns.sh | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/dyndns.sh b/dyndns.sh
index f17a281..325658a 100755
--- a/dyndns.sh
+++ b/dyndns.sh
@@ -29,9 +29,8 @@ while ( true ); do
     for service in ${services[@]}; do
         echo "Trying with $service..."
 
-        ip="$(curl -s $service)"
-        valid_ip=$(echo $ip | grep '[0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\{3\}')
-        test -n "$valid_ip" && break
+        ip="$(curl -s $service | grep '[0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\{3\}')"
+        test -n "$ip" && break
     done
     
     echo "Found IP address $ip"