@@ -32,25 +32,22 @@ let rounds = 1;
 let reqs = 0;
 
 let port;
-const server = net.createServer().listen(0, common.mustCall(() => {
+const server = net.createServer().listen(0, common.localhostIPv4, common.mustCall(() => {
   port = server.address().port;
   server.close(common.mustCall(pummel));
 }));
 
 function pummel() {
   let pending;
   for (pending = 0; pending < ATTEMPTS_PER_ROUND; pending++) {
-    net.createConnection({ port, autoSelectFamily: false }).on('error', common.mustCallAtLeast((error) => {
-      // Family autoselection might be skipped if only a single address is returned by DNS.
-      const actualError = Array.isArray(error.errors) ? error.errors[0] : error;
-
+    net.createConnection({ host: common.localhostIPv4, port }).on('error', common.mustCall((error) => {
       console.log('pending', pending, 'rounds', rounds);
-      assert.strictEqual(actualError.code, 'ECONNREFUSED');
+      assert.strictEqual(error.code, 'ECONNREFUSED');
       if (--pending > 0) return;
       if (rounds === ROUNDS) return check();
       rounds++;
       pummel();
-    }, 0));
+    }));
     reqs++;
   }
 }
 
@@ -93,7 +93,10 @@ function startClient() {
     port: common.PORT,
     method: 'GET',
     path: '/',
-    headers: { 'content-length': buffer.length },
+    headers: {
+      'connection': 'close',
+      'content-length': buffer.length,
+    },
   }, common.mustCall((res) => {
     res.setEncoding('utf8');
     res.on('data', common.mustCall((string) => {