diff --git a/assets/components/openshift-router/deployment.yaml b/assets/components/openshift-router/deployment.yaml
index 8834c39fdd..1621b7532d 100644
--- a/assets/components/openshift-router/deployment.yaml
+++ b/assets/components/openshift-router/deployment.yaml
@@ -63,6 +63,8 @@ spec:
               value: 1s
             - name: ROUTER_DOMAIN
               value: apps.{{ .BaseDomain }}
+            - name: ROUTER_IP_V4_V6_MODE
+              value: '{{ .RouterMode }}'
           livenessProbe:
             failureThreshold: 3
             httpGet:
diff --git a/pkg/components/controllers.go b/pkg/components/controllers.go
index 6c7591a2c6..cecd870c31 100644
--- a/pkg/components/controllers.go
+++ b/pkg/components/controllers.go
@@ -176,10 +176,20 @@ func startIngressController(ctx context.Context, cfg *config.Config, kubeconfigP
 		klog.Warningf("Failed to apply configMap %v: %v", cm, err)
 		return err
 	}
+
+	routerMode := "v4"
+	if cfg.IsIPv6() {
+		routerMode = "v4v6"
+		if !cfg.IsIPv4() {
+			routerMode = "v6"
+		}
+	}
+
 	extraParams := assets.RenderParams{
 		"RouterNamespaceOwnership": cfg.Ingress.AdmissionPolicy.NamespaceOwnership == config.NamespaceOwnershipAllowed,
 		"RouterHttpPort":           *cfg.Ingress.Ports.Http,
 		"RouterHttpsPort":          *cfg.Ingress.Ports.Https,
+		"RouterMode":               routerMode,
 	}
 	if err := assets.ApplyServices(ctx, svc, renderTemplate, renderParamsFromConfig(cfg, extraParams), kubeconfigPath); err != nil {
 		klog.Warningf("Failed to apply service %v %v", svc, err)
diff --git a/pkg/config/config.go b/pkg/config/config.go
index bfc5eceb21..a21e3d48a6 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -404,6 +404,26 @@ func (c Config) UserNodeIP() string {
 	return ""
 }
 
+func (c Config) IsIPv4() bool {
+	for _, network := range c.Network.ClusterNetwork {
+		ip, _, _ := net.ParseCIDR(network)
+		if ip.To4() != nil {
+			return true
+		}
+	}
+	return false
+}
+
+func (c Config) IsIPv6() bool {
+	for _, network := range c.Network.ClusterNetwork {
+		ip, _, _ := net.ParseCIDR(network)
+		if ip.To4() == nil {
+			return true
+		}
+	}
+	return false
+}
+
 var allHostnames []string
 
 func getAllHostnames() ([]string, error) {
diff --git a/scripts/auto-rebase/rebase.sh b/scripts/auto-rebase/rebase.sh
index 59c5a5f0f7..bfa1441f0e 100755
--- a/scripts/auto-rebase/rebase.sh
+++ b/scripts/auto-rebase/rebase.sh
@@ -690,6 +690,11 @@ EOF
     yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_TCP_BALANCE_SCHEME", "value": "source"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
     yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_THREADS", "value": "4"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
     yq -i '.spec.template.spec.containers[0].env += {"name": "SSL_MIN_VERSION", "value": "TLSv1.2"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
+    #    Not use proxy protocol due to lack of load balancer support
+    yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_USE_PROXY_PROTOCOL", "value": "false"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
+    yq -i '.spec.template.spec.containers[0].env += {"name": "GRACEFUL_SHUTDOWN_DELAY", "value": "1s"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
+    yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_DOMAIN", "value": "apps.{{ .BaseDomain }}"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
+    yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_IP_V4_V6_MODE", "value": "{{ .RouterMode }}"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
     # TODO: Generate and volume mount the router-stats-default secret
     # yq -i '.spec.template.spec.containers[0].env += {"name": "STATS_PASSWORD_FILE", "value": "/var/lib/haproxy/conf/metrics-auth/statsPassword"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
     # yq -i '.spec.template.spec.containers[0].env += {"name": "STATS_USERNAME_FILE", "value": "/var/lib/haproxy/conf/metrics-auth/statsUsername"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
@@ -719,10 +724,6 @@ EOF
     yq -i '.spec.replicas = 1' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
     #    Set deployment strategy type to Recreate.
     yq -i '.spec.strategy.type = "Recreate"' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
-    #    Not use proxy protocol due to lack of load balancer support
-    yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_USE_PROXY_PROTOCOL", "value": "false"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
-    yq -i '.spec.template.spec.containers[0].env += {"name": "GRACEFUL_SHUTDOWN_DELAY", "value": "1s"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
-    yq -i '.spec.template.spec.containers[0].env += {"name": "ROUTER_DOMAIN", "value": "apps.{{ .BaseDomain }}"}' "${REPOROOT}"/assets/components/openshift-router/deployment.yaml
     #    Configure LoadBalancer service
     yq -i '.metadata += {"name": "router-default", "namespace": "openshift-ingress"}' "${REPOROOT}"/assets/components/openshift-router/service-cloud.yaml
     yq -i '.spec.selector = {"ingresscontroller.operator.openshift.io/deployment-ingresscontroller": "default"}' "${REPOROOT}"/assets/components/openshift-router/service-cloud.yaml