From 1e08d48d882bf871833f5bdb509152ebd800242d Mon Sep 17 00:00:00 2001
From: nSQUICK <87062921+nSQUICK@users.noreply.github.com>
Date: Mon, 5 Oct 2026 11:26:00 +0400
Subject: [PATCH] TUN inbound: Start on Windows when IPv6 is disabled
 system-wide (#6874)

https://github.com/XTLS/Xray-core/pull/6874#issuecomment-5989986544
---
 proxy/tun/tun_windows.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/proxy/tun/tun_windows.go b/proxy/tun/tun_windows.go
index d0101c2f7..61106efe6 100644
--- a/proxy/tun/tun_windows.go
+++ b/proxy/tun/tun_windows.go
@@ -178,6 +178,11 @@ startOver:
 		}
 		ipif, err := t.luid.IPInterface(family)
 		if err != nil {
+			// With IPv6 disabled system-wide (DisabledComponents), the adapter has no
+			// IPv6 interface at all. Skip the family unless the config asks for it.
+			if err == windows.ERROR_NOT_FOUND && family == windows.AF_INET6 && !address6 && !route6 {
+				continue
+			}
 			return err
 		}
 		ipif.RouterDiscoveryBehavior = winipcfg.RouterDiscoveryDisabled