diff --git a/Install.sh b/Install.sh
index a192a27..49f09ff 100644
--- a/Install.sh
+++ b/Install.sh
@@ -1315,11 +1315,13 @@ function prompt_fake_domain() {
 function prompt_and_check_bound_domain() {
   read -p "请输入域名（用于自动申请证书）: " input_domain
 
-  local_ip=$(hostname -I | awk '{print $1}')
+  local_ip_v4=$(hostname -I | awk '{print $1}')
+  local_ip_v6=$(ip -o -6 addr show scope global | awk '{print $4; exit}')
+  
   resolved_ipv4=$(dig +short A "$input_domain")
   resolved_ipv6=$(dig +short AAAA "$input_domain")
 
-  if [[ "$resolved_ipv4" != "$local_ip" && "$resolved_ipv6" != "$local_ip" ]]; then
+  if [[ "$resolved_ipv4" != "$local_ip_v4" && "$resolved_ipv6" != "$local_ip_v6" ]]; then
     echo "错误：域名未绑定本机IP，请重新输入。"
     prompt_and_check_bound_domain
   else