From 4639ced63042c822f192ec28632c2890ef126cb9 Mon Sep 17 00:00:00 2001
From: Ted Yu <yuzhihong@gmail.com>
Date: Tue, 20 Aug 2019 19:02:27 -0700
Subject: [PATCH] Remove check for addIPv6Checks which evaluates to true

---
 cmd/kubeadm/app/preflight/checks.go | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/cmd/kubeadm/app/preflight/checks.go b/cmd/kubeadm/app/preflight/checks.go
index f1b6071e76c..3fe62d2b208 100644
--- a/cmd/kubeadm/app/preflight/checks.go
+++ b/cmd/kubeadm/app/preflight/checks.go
@@ -984,11 +984,9 @@ func RunJoinNodeChecks(execer utilsexec.Interface, cfg *kubeadmapi.JoinConfigura
 			checks = append(checks,
 				HTTPProxyCheck{Proto: "https", Host: ipstr},
 			)
-			if !addIPv6Checks {
-				if ip := net.ParseIP(ipstr); ip != nil {
-					if utilsnet.IsIPv6(ip) {
-						addIPv6Checks = true
-					}
+			if ip := net.ParseIP(ipstr); ip != nil {
+				if utilsnet.IsIPv6(ip) {
+					addIPv6Checks = true
 				}
 			}
 		}