From f7757da7edceb23de39e2460fd59068eb5834c93 Mon Sep 17 00:00:00 2001
From: Jake Lucas <jakelucas@users.noreply.github.com>
Date: Sun, 30 Sep 2018 23:17:04 +0900
Subject: [PATCH] proxy: Use DualStack=true in defaultDialer (#2305)

---
 caddyhttp/proxy/reverseproxy.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/caddyhttp/proxy/reverseproxy.go b/caddyhttp/proxy/reverseproxy.go
index 4de24ea62..b638bd23d 100644
--- a/caddyhttp/proxy/reverseproxy.go
+++ b/caddyhttp/proxy/reverseproxy.go
@@ -48,6 +48,7 @@ var (
 	defaultDialer = &net.Dialer{
 		Timeout:   30 * time.Second,
 		KeepAlive: 30 * time.Second,
+		DualStack: true,
 	}
 
 	bufferPool = sync.Pool{New: createBuffer}