diff --git a/src/locales/en.json b/src/locales/en.json
index 6616cddb..8aef867f 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -494,6 +494,7 @@
   "Debian": "Debian",
   "Dedicated": "Dedicated",
   "Default Policy": "Default Policy",
+  "Default is slaac, for details, see https://docs.openstack.org/neutron/latest/admin/config-ipv6.html": "Default is slaac, for details, see https://docs.openstack.org/neutron/latest/admin/config-ipv6.html",
   "Degraded": "Degraded",
   "Delay Interval(s)": "Delay Interval(s)",
   "Delete": "Delete",
diff --git a/src/locales/zh.json b/src/locales/zh.json
index 8e6eeac4..2969b527 100644
--- a/src/locales/zh.json
+++ b/src/locales/zh.json
@@ -494,6 +494,7 @@
   "Debian": "",
   "Dedicated": "专用",
   "Default Policy": "默认策略",
+  "Default is slaac, for details, see https://docs.openstack.org/neutron/latest/admin/config-ipv6.html": "默认使用slaac模式，详细配置方式请查看 https://docs.openstack.org/neutron/latest/admin/config-ipv6.html",
   "Degraded": "降级",
   "Delay Interval(s)": "检查间隔(秒)",
   "Delete": "删除",
diff --git a/src/pages/network/containers/Network/actions/CreateNetwork.jsx b/src/pages/network/containers/Network/actions/CreateNetwork.jsx
index 1d59c5bf..0b8993d6 100644
--- a/src/pages/network/containers/Network/actions/CreateNetwork.jsx
+++ b/src/pages/network/containers/Network/actions/CreateNetwork.jsx
@@ -21,6 +21,7 @@ import { isEmpty, isFunction } from 'lodash';
 import Notify from 'components/Notify';
 import { checkPolicyRule } from 'resources/policy';
 import globalNeutronStore from 'stores/neutron/neutron';
+import { subnetIpv6Tip } from 'resources/network';
 import networkUtil from './networkUtil';
 
 const {
@@ -68,6 +69,8 @@ export class CreateNetwork extends ModalAction {
       disable_gateway: false,
       more: false,
       port_security_enabled: true,
+      ipv6_ra_mode: 'slaac',
+      ipv6_address_mode: 'slaac',
     };
   }
 
@@ -418,6 +421,7 @@ export class CreateNetwork extends ModalAction {
             value: 'slaac',
           },
         ],
+        tip: subnetIpv6Tip,
         hidden: ip_version !== 'ipv6',
         dependencies: ['ipv6_address_mode'],
         allowClear: true,
@@ -454,6 +458,7 @@ export class CreateNetwork extends ModalAction {
             value: 'slaac',
           },
         ],
+        tip: subnetIpv6Tip,
         hidden: ip_version !== 'ipv6',
         allowClear: true,
       },
diff --git a/src/pages/network/containers/Network/actions/CreateSubnet.jsx b/src/pages/network/containers/Network/actions/CreateSubnet.jsx
index 70eda81e..abe77f1f 100644
--- a/src/pages/network/containers/Network/actions/CreateSubnet.jsx
+++ b/src/pages/network/containers/Network/actions/CreateSubnet.jsx
@@ -20,6 +20,7 @@ import { isEmpty } from 'lodash';
 import { checkPolicyRule } from 'resources/policy';
 import globalProjectStore from 'stores/keystone/project';
 import globalRootStore from 'stores/root';
+import { subnetIpv6Tip } from 'resources/network';
 import networkUtil from './networkUtil';
 
 const {
@@ -60,6 +61,8 @@ export default class CreateSubnet extends ModalAction {
       project_id: this.currentProjectId,
       disable_gateway: false,
       more: false,
+      ipv6_ra_mode: 'slaac',
+      ipv6_address_mode: 'slaac',
     };
   }
 
@@ -195,6 +198,7 @@ export default class CreateSubnet extends ModalAction {
             value: 'slaac',
           },
         ],
+        tip: subnetIpv6Tip,
         hidden: ip_version !== 'ipv6',
         dependencies: ['ipv6_address_mode'],
         allowClear: true,
@@ -231,6 +235,7 @@ export default class CreateSubnet extends ModalAction {
             value: 'slaac',
           },
         ],
+        tip: subnetIpv6Tip,
         hidden: ip_version !== 'ipv6',
         allowClear: true,
       },
diff --git a/src/resources/network.jsx b/src/resources/network.jsx
index 8e0ad9cf..d50d7c8b 100644
--- a/src/resources/network.jsx
+++ b/src/resources/network.jsx
@@ -144,3 +144,7 @@ function PopUpSubnet({ subnetIds }) {
     ))
   );
 }
+
+export const subnetIpv6Tip = t(
+  'Default is slaac, for details, see https://docs.openstack.org/neutron/latest/admin/config-ipv6.html'
+);