Re: statement regarding keepalives

Mikael Abrahamsson <swmike@swm.pp.se> Thu, 16 August 2018 15:02 UTC

Return-Path: <swmike@swm.pp.se>
X-Original-To: tsv-area@ietfa.amsl.com
Delivered-To: tsv-area@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 06D3712F1AB; Thu, 16 Aug 2018 08:02:04 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.301
X-Spam-Level:
X-Spam-Status: No, score=-4.301 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=swm.pp.se
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R3umgpYvDMhY; Thu, 16 Aug 2018 08:02:01 -0700 (PDT)
Received: from uplift.swm.pp.se (ipv6.swm.pp.se [IPv6:2a00:801::f]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 33FD01277C8; Thu, 16 Aug 2018 08:02:01 -0700 (PDT)
Received: by uplift.swm.pp.se (Postfix, from userid 501) id B13B9AF; Thu, 16 Aug 2018 17:01:58 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=swm.pp.se; s=mail; t=1534431718; bh=PFpicp9Ij335AOKoT0OMquEEc2+XTgrn/K/cEAeOOfA=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=pF7BQVCeox6yY4yG1u289W4Gj4A8ODsI7YtzJ/ZbkpnacDZ9MU6dcnqeI5eHHU1MR chnskGb80AibhhJwjMENr4eIjZiZFXuKXnJVzuNgSRLwcEL3l+IHuVz2wYGH0D36Ju edUdAnlnwQx9/IixrP7+tl1DNY3ffQtsOPAYj8E4=
Received: from localhost (localhost [127.0.0.1]) by uplift.swm.pp.se (Postfix) with ESMTP id AEA7B9F; Thu, 16 Aug 2018 17:01:58 +0200 (CEST)
Date: Thu, 16 Aug 2018 17:01:58 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Tom Herbert <tom@herbertland.com>
cc: "Olle E. Johansson" <oej@edvina.net>, "netconf-chairs@ietf.org" <netconf-chairs@ietf.org>, "tls-ads@ietf.org" <tls-ads@ietf.org>, "tsv-area@ietf.org" <tsv-area@ietf.org>, "tsvwg-ads@tools.ietf.org" <tsvwg-ads@tools.ietf.org>
Subject: Re: statement regarding keepalives
In-Reply-To: <CALx6S35AsYByzY=_vBvcyc4=QWyvLbeNUgOVSU64A760Qk078w@mail.gmail.com>
Message-ID: <alpine.DEB.2.20.1808161701210.19688@uplift.swm.pp.se>
References: <D3326DE0-3F31-4045-B945-82B3F417BE4B@juniper.net> <alpine.DEB.2.20.1807201340240.14354@uplift.swm.pp.se> <B50DC954-CBB6-41C5-BE3A-F1DECD6046A5@juniper.net> <717202c9c6c6b3d083bfa4c8a9925e45@strayalpha.com> <6377766E-9A03-41BA-A4D4-8796F46278BD@juniper.net> <CALx6S34+rG_rx+79=iaeu5YT4pYUWRqAym6S_CNzJq9-a40Yvw@mail.gmail.com> <513E9F0D-CFAD-4009-8F86-289D9DC55A79@juniper.net> <alpine.DEB.2.20.1808160919260.19688@uplift.swm.pp.se> <CF1F342A-4947-43A7-B84D-9B9DA1A7F1EF@edvina.net> <CALx6S35AsYByzY=_vBvcyc4=QWyvLbeNUgOVSU64A760Qk078w@mail.gmail.com>
User-Agent: Alpine 2.20 (DEB 67 2015-01-07)
Organization: People's Front Against WWW
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII; format=flowed
Archived-At: <https://mailarchive.ietf.org/arch/msg/tsv-area/g6g1N1hKa1Pih1t3oc4xjzc6M6g>
X-BeenThere: tsv-area@ietf.org
X-Mailman-Version: 2.1.27
Precedence: list
List-Id: IETF Transport and Services Area Mailing List <tsv-area.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tsv-area>, <mailto:tsv-area-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tsv-area/>
List-Post: <mailto:tsv-area@ietf.org>
List-Help: <mailto:tsv-area-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tsv-area>, <mailto:tsv-area-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 16 Aug 2018 15:02:04 -0000

On Thu, 16 Aug 2018, Tom Herbert wrote:

> They are already on, TCP has a default keepalive for 2 hrs. The issue

http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/usingkeepalive.html says:

"Remember that keepalive support, even if configured in the kernel, is not 
the default behavior in Linux."

Which OSes default to this on?

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se