diff --git a/easytier-gui/src/App.vue b/easytier-gui/src/App.vue
index 69e67eaa..4f9a60f8 100644
--- a/easytier-gui/src/App.vue
+++ b/easytier-gui/src/App.vue
@@ -6,9 +6,11 @@ import StepperPanel from 'primevue/stepperpanel';
 
 import { useToast } from "primevue/usetoast";
 
-import { i18n, loadLocaleFromLocalStorage, NetworkConfig, parseNetworkConfig,
+import {
+  i18n, loadLocaleFromLocalStorage, NetworkConfig, parseNetworkConfig,
   useNetworkStore, runNetworkInstance, retainNetworkInstance, collectNetworkInfos,
-  changeLocale } from './main';
+  changeLocale
+} from './main';
 
 import Config from './components/Config.vue';
 import Status from './components/Status.vue';
@@ -35,7 +37,9 @@ const items = ref([
   {
     label: () => i18n.global.t('del_cur_network'),
     icon: 'pi pi-times',
-    command: () => {
+    command: async () => {
+      networkStore.removeNetworkInstance(networkStore.curNetwork.instance_id);
+      await retainNetworkInstance(networkStore.networkInstanceIds);
       networkStore.delCurNetwork();
     },
     disabled: () => networkStore.networkList.length <= 1,
diff --git a/easytier/src/arch/windows.rs b/easytier/src/arch/windows.rs
index 2554cde5..2ee8452c 100644
--- a/easytier/src/arch/windows.rs
+++ b/easytier/src/arch/windows.rs
@@ -60,6 +60,16 @@ pub fn disable_connection_reset<S: AsRawSocket>(socket: &S) -> io::Result<()> {
     Ok(())
 }
 
+pub fn interface_count() -> io::Result<usize> {
+    let ifaces = network_interface::NetworkInterface::show().map_err(|e| {
+        io::Error::new(
+            ErrorKind::NotFound,
+            format!("Failed to get interfaces. error: {}", e),
+        )
+    })?;
+    Ok(ifaces.len())
+}
+
 pub fn find_interface_index(iface_name: &str) -> io::Result<u32> {
     let ifaces = network_interface::NetworkInterface::show().map_err(|e| {
         io::Error::new(
diff --git a/easytier/src/instance/instance.rs b/easytier/src/instance/instance.rs
index 29fc243e..64742a65 100644
--- a/easytier/src/instance/instance.rs
+++ b/easytier/src/instance/instance.rs
@@ -9,6 +9,7 @@ use futures::{SinkExt, StreamExt};
 use pnet::packet::ipv4::Ipv4Packet;
 
 use tokio::{sync::Mutex, task::JoinSet};
+use tonic::transport::server::TcpIncoming;
 use tonic::transport::Server;
 
 use crate::common::config::ConfigLoader;
@@ -285,7 +286,7 @@ impl Instance {
         self.listener_manager.lock().await.run().await?;
         self.peer_manager.run().await?;
 
-        self.run_rpc_server().unwrap();
+        self.run_rpc_server()?;
 
         self.ip_proxy = Some(IpProxy::new(
             self.get_global_ctx(),
@@ -390,7 +391,7 @@ impl Instance {
         }
     }
 
-    fn run_rpc_server(&mut self) -> Result<(), Box<dyn std::error::Error>> {
+    fn run_rpc_server(&mut self) -> Result<(), Error> {
         let Some(addr) = self.global_ctx.config.get_rpc_portal() else {
             tracing::info!("rpc server not enabled, because rpc_portal is not set.");
             return Ok(());
@@ -401,6 +402,8 @@ impl Instance {
         let peer_center = self.peer_center.clone();
         let vpn_portal_rpc = self.get_vpn_portal_rpc_service();
 
+        let incoming = TcpIncoming::new(addr, true, None)
+            .map_err(|e| anyhow::anyhow!("create rpc server failed. addr: {}, err: {}", addr, e))?;
         self.tasks.spawn(async move {
             let _g = net_ns.guard();
             Server::builder()
@@ -422,7 +425,7 @@ impl Instance {
                 .add_service(crate::rpc::vpn_portal_rpc_server::VpnPortalRpcServer::new(
                     vpn_portal_rpc,
                 ))
-                .serve(addr)
+                .serve_with_incoming(incoming)
                 .await
                 .with_context(|| format!("rpc server failed. addr: {}", addr))
                 .unwrap();
diff --git a/easytier/src/instance/virtual_nic.rs b/easytier/src/instance/virtual_nic.rs
index 75e7d3f8..e6b7238c 100644
--- a/easytier/src/instance/virtual_nic.rs
+++ b/easytier/src/instance/virtual_nic.rs
@@ -273,6 +273,15 @@ impl VirtualNic {
             });
         }
 
+        #[cfg(target_os = "windows")]
+        {
+            use std::net::IpAddr;
+            let c = crate::arch::windows::interface_count()?;
+            config.name(format!("et{}_{}", self.dev_name, c));
+            // set a temporary address
+            config.address(format!("172.0.{}.3", c).parse::<IpAddr>().unwrap());
+        }
+
         if self.queue_num != 1 {
             todo!("queue_num != 1")
         }