From 0b87b1a0958c88ed08b8232ae1e443d0317115fa Mon Sep 17 00:00:00 2001
From: Luigi Pinca <luigipinca@gmail.com>
Date: Tue, 20 Sep 2016 12:02:54 +0200
Subject: [PATCH] dns: tweak regex for IPv6 addresses
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The regex used in `dns.setServers()` to match IPv6 addresses in square
brackets uses a capturing group for the port but this info is not
needed.

This commit replaces the capturing group with a non capturing one.

Ref: https://github.com/nodejs/node/pull/8965
PR-URL: https://github.com/nodejs/node/pull/8665
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Ilkka Myller <ilkka.myller@nodefield.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Prince John Wesley <princejohnwesley@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
---
 lib/dns.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dns.js b/lib/dns.js
index d577023b50c440..0aeffca03b93a2 100644
--- a/lib/dns.js
+++ b/lib/dns.js
@@ -292,7 +292,7 @@ exports.setServers = function(servers) {
     if (ver)
       return newSet.push([ver, serv]);
 
-    var match = serv.match(/\[(.*)\](:\d+)?/);
+    var match = serv.match(/\[(.*)\](?::\d+)?/);
 
     // we have an IPv6 in brackets
     if (match) {