From b2870a823f354156acd24921deaaeab64e3d29f9 Mon Sep 17 00:00:00 2001
From: tsosunchia <59512455+tsosunchia@users.noreply.github.com>
Date: Fri, 3 Nov 2023 01:21:53 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E9=BB=98=E8=AE=A4=E8=A1=8C?=
 =?UTF-8?q?=E4=B8=BA=EF=BC=8C=E5=BD=93=E6=8C=87=E5=AE=9Av4/v6=E6=97=B6?=
 =?UTF-8?q?=E8=87=AA=E5=8A=A8=E9=80=89=E6=8B=A9=E7=AC=AC=E4=B8=80=E4=B8=AA?=
 =?UTF-8?q?IP=E6=96=B9=E4=BE=BF=E8=84=9A=E6=9C=AC=E4=BD=BF=E7=94=A8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md       | 2 +-
 README_zh_CN.md | 2 +-
 util/util.go    | 6 ++++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 9ac706f4..8fc9e547 100644
--- a/README.md
+++ b/README.md
@@ -142,7 +142,7 @@ nexttrace --table 1.0.0.1
 nexttrace --raw 1.0.0.1
 nexttrace --json 1.0.0.1
 
-# IPv4/IPv6 Resolve Only
+# IPv4/IPv6 Resolve Only, and automatically select the first IP when there are multiple IPs
 nexttrace --ipv4 g.co
 nexttrace --ipv6 g.co
 
diff --git a/README_zh_CN.md b/README_zh_CN.md
index 9a2a4a31..45a176a7 100644
--- a/README_zh_CN.md
+++ b/README_zh_CN.md
@@ -153,7 +153,7 @@ nexttrace --table 1.0.0.1
 nexttrace --raw 1.0.0.1
 nexttrace --json 1.0.0.1
 
-# 只进行IPv4/IPv6解析
+# 只进行IPv4/IPv6解析，且当多个IP时自动选择第一个IP
 nexttrace --ipv4 g.co
 nexttrace --ipv6 g.co
 
diff --git a/util/util.go b/util/util.go
index a26918ad..81c7fcca 100644
--- a/util/util.go
+++ b/util/util.go
@@ -119,9 +119,11 @@ func DomainLookUp(host string, ipVersion string, dotServer string, disableOutput
 		var filteredIPs []net.IP
 		for _, ip := range ips {
 			if ipVersion == "4" && ip.To4() != nil {
-				filteredIPs = append(filteredIPs, ip)
+				filteredIPs = []net.IP{ip}
+				break
 			} else if ipVersion == "6" && strings.Contains(ip.String(), ":") {
-				filteredIPs = append(filteredIPs, ip)
+				filteredIPs = []net.IP{ip}
+				break
 			}
 		}
 		ips = filteredIPs