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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 4F5D5C54E4B for ; Tue, 12 May 2020 06:58:22 +0000 (UTC) Received: from krantz.zx2c4.com (krantz.zx2c4.com [192.95.5.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D9AE020752 for ; Tue, 12 May 2020 06:58:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="eeiYoYJv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9AE020752 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=wireguard-bounces@lists.zx2c4.com Received: by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id f5d81b62; Tue, 12 May 2020 06:43:43 +0000 (UTC) Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [2a00:1450:4864:20::12e]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id 0535e33e (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for ; Tue, 12 May 2020 06:43:41 +0000 (UTC) Received: by mail-lf1-x12e.google.com with SMTP id b26so9615841lfa.5 for ; Mon, 11 May 2020 23:57:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=5k0ohXy5gVPEwdskyRChhHM++TW93d62W27X++MsJ2Y=; b=eeiYoYJvBMBHVCsivBDq0wY82QDQptzYkEfjMMm3mihoBogmsMLhUnZ/EjY0V06BYo 2O3uS1h1q4AnXb0JqGFncSHWHygviGc6/aAZ0Wh4WAXaFD/P9JMa0V0BebZcPxMTWVLn lJFQoOtf5b5ryDJELW1HrZnZk8XezL2XBYOciL9/0PDoPjTIqI4oqO2xhrng4dVj/OjQ LtHecoHsrEQ76QiurGwXxsex8ikdPfpzpGqrTfpgxPbT3ps8fGHhL3AzAtMRkmD34rC5 uMrtC123VS2s43WfpMRATcygkxll0k1cJ097z7eIKq6ZPtz8dCJo2nfhB8dHMXqax29V xK6w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=5k0ohXy5gVPEwdskyRChhHM++TW93d62W27X++MsJ2Y=; b=QNR+G34OJ5StvTpsxvZ8CIVdPOcziHY/XUteMm4mzIM33Gj9e0M0/FKVycWyBzpamO pbqcQa5ucRpE5LQO9J2WG59mh58tlBJSJhqD+YV9stWim6ZeCr4HY4pA9PQr3ME4OFnl jGqJvv9RXY+/kOp7y/CJiXkUYX46NWVTvWjExoRPda/BaDTAKqqqYzEoLGagxrk41Zid 34xW+WJIUsQ2AV453s2clgy5aao+ZK0fsXCrHu1lkwaYZ5CVK0/BqpqIx1bIXsl45kNu PclKntPWlQ/9QvkR4BJWBp36MDzZKx/FcF0ncc0tbnb+3o7z/YGKyYvqCjCnFz8nQOrb w7Hg== X-Gm-Message-State: AOAM530N4mrhlR5aW3agUNS2WPcOcoMrUs8mMEmCcDjj8/U+jKYrBva2 za28kimYeoUH2z2wbBCRMtaedCxIphzCDHZmIxaqW881PzI= X-Google-Smtp-Source: ABdhPJxF+3T8nT+HmlKhxPJbhps6Zndwv07otuMxx0hfUjgc0bC7I1WLt17Ie1f90swu3+eCtp1k3nPgWy+UVR4hn/8= X-Received: by 2002:ac2:5999:: with SMTP id w25mr13191542lfn.196.1589266624892; Mon, 11 May 2020 23:57:04 -0700 (PDT) MIME-Version: 1.0 References: <71c12e22-c7b6-9753-cc44-aac0f51592ff@pallas.us> <9c64d009-4c24-425f-9126-ba93279c208e@www.fastmail.com> In-Reply-To: From: Dimitar Vassilev Date: Tue, 12 May 2020 09:56:53 +0300 Message-ID: Subject: Re: WireGuard over WireGuard To: Derrick Lyndon Pallas Cc: WireGuard mailing list Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: wireguard@lists.zx2c4.com X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: wireguard-bounces@lists.zx2c4.com Sender: "WireGuard" Hi all, for my enlightenment can you please advise in which situation such setups are useful? Thanks! =D0=9D=D0=B0 =D1=87=D1=82, 7.05.2020 =D0=B3. =D0=B2 4:01 Derrick Lyndon Pal= las =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0: > > Note for the list: IPv6 has a minimum of 1280, which means 1360 in the > outer layer. ~Derrick > > > On 5/6/20 4:54 PM, Jason A. Donenfeld wrote: > > On Wed, May 6, 2020 at 5:28 PM John Lauro wrote: > >> Wireguard is defaulting to 1420 MTU, the ethernet adapter is 1500 MTU, > >> and I have IPv6 completely disabled. > >> > >> Can/should the MTU of wireguard be bumped to 1440? > > You could if you wanted. But if you don't do it perfectly on all sides > > with total uniformity and clearheadedness about your network design, > > you'll run into subtle problems.