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=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 6A831C47434 for ; Mon, 7 Dec 2020 16:35:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F422238E7 for ; Mon, 7 Dec 2020 16:35:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727915AbgLGQfN (ORCPT ); Mon, 7 Dec 2020 11:35:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727754AbgLGQfN (ORCPT ); Mon, 7 Dec 2020 11:35:13 -0500 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1441C061794 for ; Mon, 7 Dec 2020 08:34:26 -0800 (PST) Received: by mail-wr1-x434.google.com with SMTP id z7so13391801wrn.3 for ; Mon, 07 Dec 2020 08:34:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=1mvVi+gytWP6lRerptLlAS7iOhyJsjZzYhFUYKXXwwo=; b=YXdSn9hTnYdXcCl8DTRvfW3K3Kc+iLp4hxNdACLy/m2Vh40TWbfT+1/ywrelaHdSNU +ESXAWc9RbogeqbWlvryE3kMUenPis9kyZ3ETnnCL6xPOo8hgbweuKQH0B0ouMkDGCOY WVqT3klUIiRG8hRpIciCflOI+XI0qZHr4B/1vox4BnL5GdYYhc+5fnC06gnSjLi7Hz/N C8H+yJfp4tX9JwSAnt9bUtFoalQw4qvm/yNnKYTHnzMOQ/U95nYJBhysjgXO9enw2RdT X7XRKO73rJgTgGGGxSZHfFo+fwGZiXYTsf0XKSsUp7huPh8k7rUudl2eZJbDJuR6agmL bJBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=1mvVi+gytWP6lRerptLlAS7iOhyJsjZzYhFUYKXXwwo=; b=Qt7EBJY0LkWgCrWJDBPWdUhkWUOjGUZ8lce1wOjEcbEqVuuj4JY+OPgoOsO5Tz27Zi UQQMRb0+JlNvsH4PHipDTuN5Wa0jNEAS6azjMdDFOBcRY1oNoeAFy2jSX4MuHYy/M1Rw LrzDPEHJzBxlV3nlyHntTr69hYIauVswmEqwNk2AtQRBKy25To9Je4u0YmXmP98lAEkB IljEmURdW3P7YrveC5D1wXOleYqROFUS7iiLsikzjVpExfLrQwj+c7KYjtXmLWccgei0 YxtiDUcEf/v/2+VLL686eoxzWuZJ/CfAg23AQDjnwAQVdScaQMg9R/1qHG81939BB3DK +9uA== X-Gm-Message-State: AOAM5328pSkRRy2B3J7XTi0VD5dtL+ty3/9VSSYm5kFQ5PXJBlCybUDG 0SNeO2rLqqiGI7RSQYDFI6tPxAmn6GvC7Q== X-Google-Smtp-Source: ABdhPJx95FvaJpFHQi+N++G7HsvF6zumeiBVDoytuev1SUSSaVQDAsZSly49sEOg8WLH6D9M9Yg2nQ== X-Received: by 2002:a5d:6286:: with SMTP id k6mr20694129wru.309.1607358865501; Mon, 07 Dec 2020 08:34:25 -0800 (PST) Received: from [192.168.1.143] ([170.253.51.130]) by smtp.gmail.com with ESMTPSA id m8sm15071336wmc.27.2020.12.07.08.34.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 07 Dec 2020 08:34:24 -0800 (PST) Subject: Re: Missing value for tcp_syncookies sysctl To: Philip Rowlands , Michael Kerrisk Cc: linux-man@vger.kernel.org References: From: "Alejandro Colomar (man-pages)" Message-ID: Date: Mon, 7 Dec 2020 17:34:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hi Philip, On 12/7/20 5:10 PM, Philip Rowlands wrote: > Under man7/tcp.7 please mention the "2" value for tcp_syncookies, which is no longer a boolean, default "1". > > First mentioned in kernel 3.12 > https://elixir.bootlin.com/linux/v3.12/source/Documentation/networking/ip-sysctl.txt#L443 > > The kernel documentation is rather ungrammatical, so suggest instead: > >> Set to 2 to send syncookies unconditionally, which can be useful for network testing (since Linux 3.12). > > > > Thanks, > Phil > Thanks for the report, and for the links and suggestion! I'll update that. Cheers, Alex -- Alejandro Colomar Linux man-pages comaintainer; http://www.kernel.org/doc/man-pages/