From 1fb84560211b918e5411399f39a1d20431ad21b1 Mon Sep 17 00:00:00 2001
From: eronez <55025357+eronez@users.noreply.github.com>
Date: Fri, 13 Feb 2026 03:40:09 +0000
Subject: [PATCH] Fix DNS not revert while close tun

---
 tun_linux.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tun_linux.go b/tun_linux.go
index ac36af2..06c4f92 100644
--- a/tun_linux.go
+++ b/tun_linux.go
@@ -328,6 +328,7 @@ func (t *NativeTun) Close() error {
 	if t.options.EXP_ExternalConfiguration {
 		return common.Close(common.PtrOrNil(t.tunFile))
 	}
+	t.unsetSearchDomainForSystemdResolved()
 	t.unsetAddresses()
 	return E.Errors(t.unsetRoute(), t.unsetRules(), common.Close(common.PtrOrNil(t.tunFile)))
 }
@@ -1094,3 +1095,14 @@ func (t *NativeTun) setSearchDomainForSystemdResolved() {
 		_ = shell.Exec(ctlPath, append([]string{"dns", t.options.Name}, common.Map(dnsServer, netip.Addr.String)...)...).Run()
 	}()
 }
+
+func (t *NativeTun) unsetSearchDomainForSystemdResolved() {
+	if t.options.EXP_DisableDNSHijack {
+		return
+	}
+	ctlPath, err := exec.LookPath("resolvectl")
+	if err != nil {
+		return
+	}
+	_ = shell.Exec(ctlPath, "revert", t.options.Name).Run()
+}