diff --git a/back/fixed_windows.sh b/back/fixed_windows.sh
index 652f651..1f9560f 100644
--- a/back/fixed_windows.sh
+++ b/back/fixed_windows.sh
@@ -52,7 +52,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}"))  # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/dockerfiles/build.sh b/dockerfiles/build.sh
index 7960a3a..b5e5fcd 100644
--- a/dockerfiles/build.sh
+++ b/dockerfiles/build.sh
@@ -101,7 +101,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}"))  # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/build_nat_network.sh b/scripts/build_nat_network.sh
index bc13117..abe3867 100644
--- a/scripts/build_nat_network.sh
+++ b/scripts/build_nat_network.sh
@@ -26,7 +26,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildct.sh b/scripts/buildct.sh
index 5f6c512..d26d829 100644
--- a/scripts/buildct.sh
+++ b/scripts/buildct.sh
@@ -33,7 +33,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}"))
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildct_onlyv6.sh b/scripts/buildct_onlyv6.sh
index 2aea43c..98fa1d9 100644
--- a/scripts/buildct_onlyv6.sh
+++ b/scripts/buildct_onlyv6.sh
@@ -49,7 +49,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}"))
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildvm.sh b/scripts/buildvm.sh
index 90868ac..e46f950 100644
--- a/scripts/buildvm.sh
+++ b/scripts/buildvm.sh
@@ -33,7 +33,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildvm_extra_ip.sh b/scripts/buildvm_extra_ip.sh
index 24be584..b82d68d 100644
--- a/scripts/buildvm_extra_ip.sh
+++ b/scripts/buildvm_extra_ip.sh
@@ -37,7 +37,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildvm_fullnat_ip.sh b/scripts/buildvm_fullnat_ip.sh
index c84f628..7cb5b48 100644
--- a/scripts/buildvm_fullnat_ip.sh
+++ b/scripts/buildvm_fullnat_ip.sh
@@ -49,7 +49,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildvm_macos.sh b/scripts/buildvm_macos.sh
index 08d8d5b..d10df56 100644
--- a/scripts/buildvm_macos.sh
+++ b/scripts/buildvm_macos.sh
@@ -26,7 +26,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildvm_manual_ip.sh b/scripts/buildvm_manual_ip.sh
index 39af12e..16b5632 100644
--- a/scripts/buildvm_manual_ip.sh
+++ b/scripts/buildvm_manual_ip.sh
@@ -57,7 +57,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/buildvm_onlyv6.sh b/scripts/buildvm_onlyv6.sh
index f37c863..231a471 100644
--- a/scripts/buildvm_onlyv6.sh
+++ b/scripts/buildvm_onlyv6.sh
@@ -51,7 +51,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}"))
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/create_ct.sh b/scripts/create_ct.sh
index 15dbaa2..2503cf9 100644
--- a/scripts/create_ct.sh
+++ b/scripts/create_ct.sh
@@ -43,7 +43,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/create_vm.sh b/scripts/create_vm.sh
index d087bbb..4a98bf8 100644
--- a/scripts/create_vm.sh
+++ b/scripts/create_vm.sh
@@ -43,7 +43,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/install_macos_images.sh b/scripts/install_macos_images.sh
index ff69e58..cee23e0 100644
--- a/scripts/install_macos_images.sh
+++ b/scripts/install_macos_images.sh
@@ -67,7 +67,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi
diff --git a/scripts/install_pve.sh b/scripts/install_pve.sh
index fecbe80..fdbd3a2 100644
--- a/scripts/install_pve.sh
+++ b/scripts/install_pve.sh
@@ -585,7 +585,7 @@ check_cdn() {
     local o_url=$1
     local shuffled_cdn_urls=($(shuf -e "${cdn_urls[@]}")) # 打乱数组顺序
     for cdn_url in "${shuffled_cdn_urls[@]}"; do
-        if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+        if curl -4 -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
             export cdn_success_url="$cdn_url"
             return
         fi