From e53f7d8993b4fae1e2de425e5c87852803362bd2 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Wed, 3 Mar 2010 17:30:39 -0800
Subject: [PATCH] net: put [ ] around IPv6 addresses for Dial

Update #538.

R=r
CC=golang-dev
https://golang.org/cl/229045
---
 src/pkg/net/dnsconfig.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/pkg/net/dnsconfig.go b/src/pkg/net/dnsconfig.go
index 7d098583df..4be207603c 100644
--- a/src/pkg/net/dnsconfig.go
+++ b/src/pkg/net/dnsconfig.go
@@ -49,7 +49,11 @@ func _DNS_ReadConfig() (*_DNS_Config, os.Error) {
 				// just an IP address.  Otherwise we need DNS
 				// to look it up.
 				name := f[1]
-				if len(ParseIP(name)) != 0 {
+				switch len(ParseIP(name)) {
+				case 16:
+					name = "[" + name + "]"
+					fallthrough
+				case 4:
 					a = a[0 : n+1]
 					a[n] = name
 					conf.servers = a
-- 
2.50.0