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,SPF_HELO_NONE,SPF_PASS, 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 44A34C433F5 for ; Thu, 16 Sep 2021 18:50:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D53460FC0 for ; Thu, 16 Sep 2021 18:50:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243162AbhIPSvz (ORCPT ); Thu, 16 Sep 2021 14:51:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240627AbhIPSvo (ORCPT ); Thu, 16 Sep 2021 14:51:44 -0400 Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7321C1212EF; Thu, 16 Sep 2021 10:37:38 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id d207-20020a1c1dd8000000b00307e2d1ec1aso5102929wmd.5; Thu, 16 Sep 2021 10:37:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=to:cc:from:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=LXlHga7X1jobUCyqmhbeMrEp+49gcHLgSpEksB7Pxg0=; b=VerHIOar0tTR3Hf8dJ0Pxbt9aa3RHMbd/4dWR4+iY9/48de+sFyM/dDNLxzE5PZZV5 P9yB2TCFtilaAjyO1tw1VjOCyZrRyQpN7Y0izs+YTol5chtchmr0q2vqjbWJ4CIyO3ge JxID+CWyR3b8SzDWugPPHENcFxWQa/wivCUV77LhTI6kdeAVpk2eNH921P7j8smRkpsP jerk3ctTRnxio40i9SX/D8SG1THTb5mXb9czVG/CmBLLG88MV7pNrlqEDNPw/loMXOya IdfofPxHRHesoT1XK1dP8gqdOcb965IoU8qctS/6+3chI1sJTrJqEBPFp5zX1jrpBGBP c/EQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:to:cc:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=LXlHga7X1jobUCyqmhbeMrEp+49gcHLgSpEksB7Pxg0=; b=Pk4HQIry49OWyNHqiqweoTdDEVxTeZtloI4RPoQyiJtX9MQ6ItR6ydX+aLYW8Ka9RP vwc1xrB53m7hfN6l7FcGQTlGyzqrr3wzigjTOtvCB5fDqdB8CkTftOGKd8K0qOs02dlv eE2nxBGCdAxcxzRCoxnjfuicelS8RSt/CJ4xYybBPDkfcnYFFha8vdv14JkTXoi5Evhn Caz4oaGBLSPiLMQxdepccFsC4hOjWRsyHNRSJqzK+nXUYE4giAosRsBWQz65qBNKA/vS oCqEeXpb6+HFX8+6BrSXGgHagio18dCTTkqf+mZu3wnhGG+WQ2KevHIGbjbbdgYaWbLp u8Qg== X-Gm-Message-State: AOAM5304jhMx4wU4c9GQVmJCL+oHjxADpqZXJg5BOgYsVpSssfT3/bV2 gZJPDg3a/RyCWJEIMsGDeTQ8cIoenVk= X-Google-Smtp-Source: ABdhPJwEHyP1ZtMD9DrszdRWPlZk7JUpi+3/uH2wcBlw7O47WG7e27NTUK2mIMMCuFI196F7BDZOsQ== X-Received: by 2002:a1c:4486:: with SMTP id r128mr10996054wma.69.1631813857363; Thu, 16 Sep 2021 10:37:37 -0700 (PDT) Received: from [10.8.0.26] ([195.53.121.100]) by smtp.gmail.com with ESMTPSA id f7sm8136477wmh.20.2021.09.16.10.37.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Sep 2021 10:37:36 -0700 (PDT) To: "Michael Kerrisk (man-pages)" , netdev@vger.kernel.org Cc: linux-man From: Alejandro Colomar Subject: [BUG?] ipv6.7: SOCK_DGRAM can accept different protocols? Message-ID: <7e1d0cae-ebd0-d7b0-cfe3-80b38ea8fbfb@gmail.com> Date: Thu, 16 Sep 2021 19:37:35 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hi, Reading a stackoverflow question it noted that, while ip(7) notes that protocol can be left as 0 for both SOCK_STREAM and SOCK_DGRAM, ipv6(7) is misleading and seems to suggest that protocol may be significant for SOCK_DGRAM (at least in the SYNOPSIS). I guess that's not true, and it can be left as 0, but since I don't know, I'll ask. Thanks, Alex -- IP(7) Linux Programmer's Manual IP(7) NAME ip - Linux IPv4 protocol implementation SYNOPSIS #include #include #include /* superset of previous */ tcp_socket = socket(AF_INET, SOCK_STREAM, 0); udp_socket = socket(AF_INET, SOCK_DGRAM, 0); raw_socket = socket(AF_INET, SOCK_RAW, protocol); -- IPV6(7) Linux Programmer's Manual IPV6(7) NAME ipv6 - Linux IPv6 protocol implementation SYNOPSIS #include #include tcp6_socket = socket(AF_INET6, SOCK_STREAM, 0); raw6_socket = socket(AF_INET6, SOCK_RAW, protocol); udp6_socket = socket(AF_INET6, SOCK_DGRAM, protocol); -- Alejandro Colomar Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/ http://www.alejandro-colomar.es/