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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BA55C432C0 for ; Tue, 26 Nov 2019 14:53:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BFB92071A for ; Tue, 26 Nov 2019 14:53:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727401AbfKZOxC (ORCPT ); Tue, 26 Nov 2019 09:53:02 -0500 Received: from Chamillionaire.breakpoint.cc ([193.142.43.52]:46852 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726101AbfKZOxC (ORCPT ); Tue, 26 Nov 2019 09:53:02 -0500 Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1iZcD4-0003x5-Jp; Tue, 26 Nov 2019 15:52:58 +0100 Date: Tue, 26 Nov 2019 15:52:58 +0100 From: Florian Westphal To: "Serguei Bezverkhi (sbezverk)" Cc: Florian Westphal , Pablo Neira Ayuso , "netfilter-devel@vger.kernel.org" Subject: Re: Operation not supported when adding jump command Message-ID: <20191126145258.GE795@breakpoint.cc> References: <5248B312-60A9-48A7-B4CF-E00D1BDF1CD2@cisco.com> <20191126122110.GD795@breakpoint.cc> <3DBD9E39-A0DF-4A69-93CC-4344617BDB2F@cisco.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3DBD9E39-A0DF-4A69-93CC-4344617BDB2F@cisco.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Serguei Bezverkhi (sbezverk) wrote: > Hello Florian, > > Thank you very much for your reply. Once I changed to Input chain type, the rule worked. It seems iptables DO allow the same rule configuration see below: > > -A PREROUTING -m comment --comment "kubernetes service portals" -j KUBE-SERVICES > -A KUBE-SERVICES -d 57.131.151.19/32 -p tcp -m comment --comment "default/portal:portal has no endpoints" -m tcp --dport 8989 -j REJECT --reject-with icmp-port-unreachable No idea how this could work: iptables -t nat -A PREROUTING -j REJECT iptables: Invalid argument. Run `dmesg' for more information. dmesg | tail -1 x_tables: ip_tables: REJECT target: only valid in filter That check has been there since beginning of git history.