From 54dd7c38e507b35ee0ffadc41a716f1782b0d32f Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Tue, 19 Apr 2016 09:09:57 -0400
Subject: [PATCH] net: set ADDRCONFIG DNS hint in connections
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b85a50b6da5bbd7e9c8902a13dfbe1a142fd786a removed the implicit
setting of DNS hints when creating a connection. This caused some
of the pi2 machines to become flaky. This commit restores the
implicit dns.ADDRCONFIG hint, but not dns.V4MAPPED.

Fixes: https://github.com/nodejs/node/issues/6133
PR-URL: https://github.com/nodejs/node/pull/6281
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Claudio Rodriguez <cjrodr@yahoo.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
---
 lib/net.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/net.js b/lib/net.js
index 61ff7327fb..e92ec369e5 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -949,6 +949,10 @@ function lookupAndConnect(self, options) {
     hints: options.hints || 0
   };
 
+  if (dnsopts.family !== 4 && dnsopts.family !== 6 && dnsopts.hints === 0) {
+    dnsopts.hints = dns.ADDRCONFIG;
+  }
+
   debug('connect: find host ' + host);
   debug('connect: dns options', dnsopts);
   self._host = host;