From 960c3ce17b3cff88a75df43d8e805706ec16c3d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Thu, 12 Dec 2024 22:49:56 +0800
Subject: [PATCH] Fix set windows dns

---
 tun_windows.go | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tun_windows.go b/tun_windows.go
index 85e3009..e69c0c4 100644
--- a/tun_windows.go
+++ b/tun_windows.go
@@ -72,7 +72,7 @@ func (t *NativeTun) configure() error {
 		if err != nil {
 			return E.Cause(err, "set ipv4 address")
 		}
-		if !t.options.EXP_DisableDNSHijack {
+		if t.options.AutoRoute && !t.options.EXP_DisableDNSHijack {
 			dnsServers := common.Filter(t.options.DNSServers, netip.Addr.Is4)
 			if len(dnsServers) == 0 && HasNextAddress(t.options.Inet4Address[0], 1) {
 				dnsServers = []netip.Addr{t.options.Inet4Address[0].Addr().Next()}
@@ -83,6 +83,11 @@ func (t *NativeTun) configure() error {
 					return E.Cause(err, "set ipv4 dns")
 				}
 			}
+		} else {
+			err = luid.SetDNS(winipcfg.AddressFamily(windows.AF_INET), nil, nil)
+			if err != nil {
+				return E.Cause(err, "set ipv4 dns")
+			}
 		}
 	}
 	if len(t.options.Inet6Address) > 0 {
@@ -90,7 +95,7 @@ func (t *NativeTun) configure() error {
 		if err != nil {
 			return E.Cause(err, "set ipv6 address")
 		}
-		if !t.options.EXP_DisableDNSHijack {
+		if t.options.AutoRoute && !t.options.EXP_DisableDNSHijack {
 			dnsServers := common.Filter(t.options.DNSServers, netip.Addr.Is6)
 			if len(dnsServers) == 0 && HasNextAddress(t.options.Inet6Address[0], 1) {
 				dnsServers = []netip.Addr{t.options.Inet6Address[0].Addr().Next()}
@@ -101,6 +106,11 @@ func (t *NativeTun) configure() error {
 					return E.Cause(err, "set ipv6 dns")
 				}
 			}
+		} else {
+			err = luid.SetDNS(winipcfg.AddressFamily(windows.AF_INET6), nil, nil)
+			if err != nil {
+				return E.Cause(err, "set ipv6 dns")
+			}
 		}
 	}
 	if len(t.options.Inet4Address) > 0 || len(t.options.Inet6Address) > 0 {