From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6EA9FC433FE for ; Thu, 6 Oct 2022 11:01:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230317AbiJFLBg (ORCPT ); Thu, 6 Oct 2022 07:01:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53702 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230384AbiJFLBf (ORCPT ); Thu, 6 Oct 2022 07:01:35 -0400 Received: from mail.netfilter.org (mail.netfilter.org [217.70.188.207]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id AD72613FA3; Thu, 6 Oct 2022 04:01:32 -0700 (PDT) Date: Thu, 6 Oct 2022 13:01:28 +0200 From: Pablo Neira Ayuso To: Martin Zaharinov Cc: Florian Westphal , Paolo Abeni , netfilter-devel@vger.kernel.org, netfilter Subject: Re: Kernel 6.0.0 bug pptp not work Message-ID: References: <3D70BC1B-A19E-45E3-B6BC-6B2719BA9B46@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <3D70BC1B-A19E-45E3-B6BC-6B2719BA9B46@gmail.com> Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org On Thu, Oct 06, 2022 at 02:34:48AM +0300, Martin Zaharinov wrote: > Hi Team > > I make test image with kernel 6.0.0 and schem is : > > internet <> router NAT <> windows client pptp > > with l2tp all is fine and connections is establesh. > > But when try to make pptp connection stay on finish phase and not connect . > > try to remove module : nf_conntrack_pptp and same not work. > > > how to debug and find why not work ? Can you see events via: conntrack -E expect ? With debugfs, you can also enable a few pr_debug() in nf_conntrack_pptp.c, maybe they provide a hint. Can you see the GRE flow? I assume this is without the flowtable?