net: put [ ] around IPv6 addresses for Dial
Update #538.
R=r
CC=golang-dev
https://golang.org/cl/229045
diff --git a/src/pkg/net/dnsconfig.go b/src/pkg/net/dnsconfig.go
index 7d09858..4be2076 100644
--- a/src/pkg/net/dnsconfig.go
+++ b/src/pkg/net/dnsconfig.go
@@ -49,7 +49,11 @@
// 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
