net/http: remove DualStack in DefaultTransport

Removing `DualStack` from `http.DefaultTransport` since it is deprecated
https://github.com/golang/go/blob/master/src/net/dial.go#L61

Change-Id: Id8ea1e68796ef8a8d49f7a04d0c4815aa92a1804
GitHub-Last-Rev: 0907b59fa793dafc764188c70487a61a720bbc7c
GitHub-Pull-Request: golang/go#41233
Reviewed-on: https://go-review.googlesource.com/c/go/+/253198
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Damien Neil <dneil@google.com>
Trust: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/src/net/http/transport.go b/src/net/http/transport.go
index 454616643054bd8204e64aba4005808eeaa81fd2..d5ee5645fba7a0d3022fc200b7f568de077c2faf 100644 (file)
--- a/src/net/http/transport.go
+++ b/src/net/http/transport.go
@@ -44,7 +44,6 @@ var DefaultTransport RoundTripper = &Transport{
        DialContext: (&net.Dialer{
                Timeout:   30 * time.Second,
                KeepAlive: 30 * time.Second,
-               DualStack: true,
        }).DialContext,
        ForceAttemptHTTP2:     true,
        MaxIdleConns:          100,