From 6158af1858f8a88193a48f1b44ba0de03dfbdaf1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Wed, 5 Feb 2025 09:17:29 +0800
Subject: [PATCH] Fix dns router crash

---
 dns/router.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dns/router.go b/dns/router.go
index 0e87c99a..1a0e3031 100644
--- a/dns/router.go
+++ b/dns/router.go
@@ -301,7 +301,7 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 		return nil, err
 	}
 	if r.dnsReverseMapping != nil && len(message.Question) > 0 && response != nil && len(response.Answer) > 0 {
-		if transport.Type() != C.DNSTypeFakeIP {
+		if transport == nil || transport.Type() != C.DNSTypeFakeIP {
 			for _, answer := range response.Answer {
 				switch record := answer.(type) {
 				case *mDNS.A: