From 42d563934b76351fd422cf3e26486697f5b2fe09 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Tue, 5 May 2020 23:55:55 +0300
Subject: [PATCH] lib/promscrape: properly connect to TCP6 addresses if
 `-enableTCP6` is set

---
 lib/promscrape/statconn.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/promscrape/statconn.go b/lib/promscrape/statconn.go
index eaf44a54bc..10d45f4aa0 100644
--- a/lib/promscrape/statconn.go
+++ b/lib/promscrape/statconn.go
@@ -4,12 +4,17 @@ import (
 	"net"
 	"sync/atomic"
 
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
 	"github.com/VictoriaMetrics/fasthttp"
 	"github.com/VictoriaMetrics/metrics"
 )
 
-func statDial(addr string) (net.Conn, error) {
-	conn, err := fasthttp.Dial(addr)
+func statDial(addr string) (conn net.Conn, err error) {
+	if netutil.TCP6Enabled() {
+		conn, err = fasthttp.DialDualStack(addr)
+	} else {
+		conn, err = fasthttp.Dial(addr)
+	}
 	dialsTotal.Inc()
 	if err != nil {
 		dialErrors.Inc()