From 0b057820dbfb62ca50415fae356af9261844beea Mon Sep 17 00:00:00 2001
From: chengpu <raozihao.rzh@alibaba-inc.com>
Date: Fri, 17 Feb 2023 16:26:36 +0800
Subject: [PATCH] fix: remove useless suffix of IPv6 address.

---
 .../java/com/alibaba/cloud/nacos/util/InetIPv6Utils.java     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/util/InetIPv6Utils.java b/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/util/InetIPv6Utils.java
index 6c432107e..740c44105 100644
--- a/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/util/InetIPv6Utils.java
+++ b/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/util/InetIPv6Utils.java
@@ -96,7 +96,10 @@ public class InetIPv6Utils {
 	}
 
 	private String normalizeIPv6(String ip) {
-		return "[" + ip + "]";
+		// Remove the suffix of network card in IPv6 address, such as
+		// 2408:400a:8c:5400:6578:5c42:77b1:bc5d%eth0
+		int idx = ip.indexOf("%");
+		return idx != -1 ? "[" + ip.substring(0, idx) + "]" : "[" + ip + "]";
 	}
 
 	private boolean isPreferredAddress(InetAddress address) {