avoid adding domains to nginx config instead of resolving to loopback address

Author: sylphrena0

backend/internal/nginx.js

@@ -146,7 +146,9 @@ const internalNginx = {
 				if (ddnsResolver.ddnsRegex.test(address)) {
 					const p = ddnsResolver.resolveAddress(address)
 						.then((resolvedIP) => {
-							Object.defineProperty(client, 'resolvedAddress', {value: resolvedIP});
+							if (resolvedIP !== address) {
+								Object.defineProperty(client, 'resolvedAddress', {value: resolvedIP});
+							}
 							return Promise.resolve();
 						});
 					promises.push(p);

backend/lib/ddns_resolver/ddns_resolver.js

@@ -34,7 +34,7 @@ const ddnsResolver = {
 			.catch((/*error*/) => {
 				// return input address in case of failure
 				logger.error(`Failed to resolve IP for ${host}`);
-				return '127.0.0.1'; // in case of failure, return the loopback address
+				return domainName;
 			});
 	},