diff --git a/route/dns.go b/route/dns.go
index a0c376c2..5fb8b47f 100644
--- a/route/dns.go
+++ b/route/dns.go
@@ -75,7 +75,6 @@ func exchangeDNSPacket(ctx context.Context, router *Router, conn N.PacketConn, b
 		return err
 	}
 	err = conn.WritePacket(responseBuffer, destination)
-	responseBuffer.Release()
 	return err
 }