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main.go

@@ -33,6 +33,21 @@ var (
 	reKVIAID       = regexp.MustCompile(`^IAID=(\d+)`)     // systemd-networkd
 )
 
+func getenv(k, d string) string {
+	if v := os.Getenv(k); v != "" {
+		return v
+	}
+	return d
+}
+
+func enabled(k string, def bool) bool {
+	b, err := strconv.ParseBool(strings.ToLower(os.Getenv(k)))
+	if err != nil {
+		return def
+	}
+	return b
+}
+
 func iaidsLinux() ([]iaidInfo, error) {
 	candidates := []string{
 		"/var/lib/NetworkManager",
@@ -292,7 +307,7 @@ func main() {
 	body, _ := json.Marshal(p)
 
 	// --- HTTP senden ---
-	url := "https://client-ipv6.stadt-hilden.de/register" // <-- ggf. anpassen
+	url := getenv("DUID_REGISTER_URL", "https://client-ipv6.stadt-hilden.de/register") // <-- ggf. anpassen
 	req, _ := http.NewRequest(http.MethodPost, url, bytes.NewReader(body))
 	req.Header.Set("Content-Type", "application/json")