diff --git a/dist/images/install.sh b/dist/images/install.sh
index 32f63298f0f..2d263bf7616 100755
--- a/dist/images/install.sh
+++ b/dist/images/install.sh
@@ -34,7 +34,7 @@ POD_GATEWAY="10.16.0.1"
 SVC_CIDR="10.96.0.0/12"                # Do NOT overlap with NODE/POD/JOIN CIDR
 JOIN_CIDR="100.64.0.0/16"              # Do NOT overlap with NODE/POD/SVC CIDR
 PINGER_EXTERNAL_ADDRESS="114.114.114.114"  # Pinger check external ip probe
-PINGER_EXTERNAL_DOMAIN="alauda.cn"         # Pinger check external domain probe
+PINGER_EXTERNAL_DOMAIN="alauda.cn."         # Pinger check external domain probe
 SVC_YAML_IPFAMILYPOLICY=""
 if [ "$IPV6" = "true" ]; then
   POD_CIDR="fd00:10:16::/64"                # Do NOT overlap with NODE/SVC/JOIN CIDR
@@ -42,7 +42,7 @@ if [ "$IPV6" = "true" ]; then
   SVC_CIDR="fd00:10:96::/112"               # Do NOT overlap with NODE/POD/JOIN CIDR
   JOIN_CIDR="fd00:100:64::/64"              # Do NOT overlap with NODE/POD/SVC CIDR
   PINGER_EXTERNAL_ADDRESS="2400:3200::1"
-  PINGER_EXTERNAL_DOMAIN="google.com"
+  PINGER_EXTERNAL_DOMAIN="google.com."
 fi
 if [ "$DUAL_STACK" = "true" ]; then
   POD_CIDR="10.16.0.0/16,fd00:10:16::/64"                # Do NOT overlap with NODE/SVC/JOIN CIDR
@@ -50,7 +50,7 @@ if [ "$DUAL_STACK" = "true" ]; then
   SVC_CIDR="10.96.0.0/12,fd00:10:96::/112"               # Do NOT overlap with NODE/POD/JOIN CIDR
   JOIN_CIDR="100.64.0.0/16,fd00:100:64::/64"             # Do NOT overlap with NODE/POD/SVC CIDR
   PINGER_EXTERNAL_ADDRESS="114.114.114.114,2400:3200::1"
-  PINGER_EXTERNAL_DOMAIN="google.com"
+  PINGER_EXTERNAL_DOMAIN="google.com."
   SVC_YAML_IPFAMILYPOLICY="ipFamilyPolicy: PreferDualStack"
 fi
 
diff --git a/kubeovn-helm/values.yaml b/kubeovn-helm/values.yaml
index fcb4b90e5b7..57008f14816 100644
--- a/kubeovn-helm/values.yaml
+++ b/kubeovn-helm/values.yaml
@@ -51,7 +51,7 @@ ipv4:
   SVC_CIDR: "10.96.0.0/12"
   JOIN_CIDR: "100.64.0.0/16"
   PINGER_EXTERNAL_ADDRESS: "114.114.114.114"
-  PINGER_EXTERNAL_DOMAIN: "alauda.cn"
+  PINGER_EXTERNAL_DOMAIN: "alauda.cn."
 
 ipv6:
   POD_CIDR: "fd00:10:16::/64"
@@ -59,7 +59,7 @@ ipv6:
   SVC_CIDR: "fd00:10:96::/112"
   JOIN_CIDR: "fd00:100:64::/64"
   PINGER_EXTERNAL_ADDRESS: "2400:3200::1"
-  PINGER_EXTERNAL_DOMAIN: "google.com"
+  PINGER_EXTERNAL_DOMAIN: "google.com."
 
 dual_stack:
   POD_CIDR: "10.16.0.0/16,fd00:10:16::/64"
@@ -67,7 +67,7 @@ dual_stack:
   SVC_CIDR: "10.96.0.0/12,fd00:10:96::/112"
   JOIN_CIDR: "100.64.0.0/16,fd00:100:64::/64"
   PINGER_EXTERNAL_ADDRESS: "114.114.114.114,2400:3200::1"
-  PINGER_EXTERNAL_DOMAIN: "google.com"
+  PINGER_EXTERNAL_DOMAIN: "google.com."
 
 perform:
   MODULES: "kube_ovn_fastpath.ko"
diff --git a/yamls/kube-ovn-dual-stack.yaml b/yamls/kube-ovn-dual-stack.yaml
index 3337bbe4d57..de6933ea1e4 100644
--- a/yamls/kube-ovn-dual-stack.yaml
+++ b/yamls/kube-ovn-dual-stack.yaml
@@ -289,7 +289,7 @@ spec:
           command:
             - /kube-ovn/kube-ovn-pinger
             - --external-address=114.114.114.114,2400:3200::1
-            - --external-dns=alauda.cn
+            - --external-dns=google.com.
           imagePullPolicy: IfNotPresent
           securityContext:
             runAsUser: 0
diff --git a/yamls/kube-ovn-ipv6.yaml b/yamls/kube-ovn-ipv6.yaml
index 3b00e46d355..8e5d4cb166e 100644
--- a/yamls/kube-ovn-ipv6.yaml
+++ b/yamls/kube-ovn-ipv6.yaml
@@ -263,7 +263,7 @@ spec:
           command:
             - /kube-ovn/kube-ovn-pinger
             - --external-address=2400:3200::1
-            - --external-dns=alauda.cn
+            - --external-dns=google.com.
           imagePullPolicy: IfNotPresent
           securityContext:
             runAsUser: 0
diff --git a/yamls/kube-ovn.yaml b/yamls/kube-ovn.yaml
index 5d9a9a6d95f..bd9f9333720 100644
--- a/yamls/kube-ovn.yaml
+++ b/yamls/kube-ovn.yaml
@@ -295,7 +295,7 @@ spec:
           command:
             - /kube-ovn/kube-ovn-pinger
             - --external-address=114.114.114.114
-            - --external-dns=alauda.cn
+            - --external-dns=alauda.cn.
           imagePullPolicy: IfNotPresent
           securityContext:
             runAsUser: 0