dns: fix test suite, part 1

test/common/inspector-helper.js

@@ -392,7 +392,7 @@ class NodeInstance extends EventEmitter {
     console.log('[test]', `Testing ${path}`);
     const headers = hostHeaderValue ? { 'Host': hostHeaderValue } : null;
     return this.portPromise.then((port) => new Promise((resolve, reject) => {
-      const req = http.get({ host, port, path, headers }, (res) => {
+      const req = http.get({ host, port, family: 4, path, headers }, (res) => {
         let response = '';
         res.setEncoding('utf8');
         res
@@ -418,6 +418,7 @@ class NodeInstance extends EventEmitter {
     const port = await this.portPromise;
     return http.get({
       port,
+      family: 4,
       path: parseURL(devtoolsUrl).path,
       headers: {
         'Connection': 'Upgrade',

test/parallel/test-cluster-message.js

@@ -60,7 +60,7 @@ if (cluster.isWorker) {
     maybeReply();
   });
 
-  server.listen(0, '127.0.0.1');
+  server.listen(0);
 } else if (cluster.isPrimary) {
 
   const checks = {

test/sequential/test-https-connect-localport.js

@@ -23,7 +23,7 @@ const assert = require('assert');
       host: 'localhost',
       pathname: '/',
       port,
-      family: 4,
+      //family: 4,
       localPort: common.PORT,
       rejectUnauthorized: false,
     }, common.mustCall(() => {

test/sequential/test-net-connect-local-error.js

@@ -9,12 +9,14 @@ const expectedErrorCodes = ['ECONNREFUSED', 'EADDRINUSE'];
 
 const optionsIPv4 = {
   port: common.PORT,
+  family: 4,
   localPort: common.PORT + 1,
   localAddress: common.localhostIPv4
 };
 
 const optionsIPv6 = {
   host: '::1',
+  family: 6,
   port: common.PORT + 2,
   localPort: common.PORT + 3,
   localAddress: '::1',