diff --git a/libs/core.sh b/libs/core.sh
index 326a85d..5595fa5 100755
--- a/libs/core.sh
+++ b/libs/core.sh
@@ -108,6 +108,15 @@ function get_def_gw {
     if [ "$(cat /sys/class/net/wlan0/operstate)" == "up" ]; then
         default_gw="$(ip route | awk 'NR==1 {print $3}')"
         echo "${default_gw}"
+        if [ -z "$default_gw" ]; then
+            log_msg "WARN: Cannot get the default gateway. Restarting service..."
+            sleep 5
+            systemctl restart sonar.service
+        fi
+    else
+        log_msg "WARN: Network is not ready yet. Restarting service..."
+        sleep 5
+        systemctl restart sonar.service
     fi
 }