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 ADF12C47255 for ; Mon, 11 May 2020 06:24:42 +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 48E0A20708 for ; Mon, 11 May 2020 06:24:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="mN8Hglpz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 48E0A20708 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 9f5a725c; Mon, 11 May 2020 06:11:24 +0000 (UTC) Received: from mail-qk1-x72d.google.com (mail-qk1-x72d.google.com [2607:f8b0:4864:20::72d]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id a4bda580 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for ; Wed, 6 May 2020 23:16:14 +0000 (UTC) Received: by mail-qk1-x72d.google.com with SMTP id t3so4168220qkg.1 for ; Wed, 06 May 2020 16:28:57 -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; bh=B3SFbu4hWzwr44dh5Oc0S8bnt3rdcIdMV6uYnZ2bCBE=; b=mN8Hglpzaht5SjEj+xnUoISVV95IaMVNu+wm4maU22OPQS4y8YGWTIsOrbtmBnPWDf tOxdVI6Groi2s9hSlrL5h1v/SGgbJ1Pm9o0ZTZs2i6KSHqY/wm7h3fP+CdRv2mGpmBdL w/nOvHQmsJr9e2bF89iIg/wKTQAltShEXktAcKxxeDeqPuDjT4PXRTX9jTgAPjyLFitG D6i+Pli1HUeBHaybFoRFrAqccYKMSY4CT4nSqqeGRFnVHpLh/E9HU/bO2dlZG4CqldWf fkug8ZUboOf07PBOzB4lYWf/6JHSGcn2+OuH8J0DeAls0LcqZDrc8GeECJVzyKHbENOT YUCg== 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; bh=B3SFbu4hWzwr44dh5Oc0S8bnt3rdcIdMV6uYnZ2bCBE=; b=ct4uZFfoQm6dxR7d/PS/q/QHlRnu5bFwKbpEnVJ7+98iJ07JCg2kflQEsNllADrIaD hpOroUDzihAawsIAQZEc6jvmF3JPD52KtyxAafyI3XpH0hRhq1ascEu4b9LGypa6EXn7 7wrWEskG4mUZ0UEIM/ciKUSGVQ9zzvkJYPKPQz/eHRSH/lCCvv9qNe5wcGZhBJTiaoKV Np/jXgbMN2eTOz81+hXFZLLU6E4N23FCD2vckAcwPVAHnwNeUXkMDMFpGxme4MhGBecx 4BHj6mp1KChM40GxNFLS7oTEQrTPORcwfiaX/EKo+PrJbK6dYNlUKCxdIIAbG1zKY4Cr Az+w== X-Gm-Message-State: AGi0PubY0G+dWTgEigtIZtX90OsiOcLavpQ+bnBynXj8tqwuhxHqM5tB OIn+IZPqgwylu3Q0v5SRxVQiONQZtCQnUqZ5/WA= X-Google-Smtp-Source: APiQypIMHZ4P4H/fn2PWsPTNYGB10GwjGoN7yWQJqZarCANwrmskRU5sEK05s1Wl6EIm3yqoM36/fQulOPzpbTmf0Jw= X-Received: by 2002:a05:620a:146a:: with SMTP id j10mr12182492qkl.333.1588807736689; Wed, 06 May 2020 16:28:56 -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: John Lauro Date: Wed, 6 May 2020 19:28:46 -0400 Message-ID: Subject: Re: WireGuard over WireGuard To: "Jason A. Donenfeld" Cc: Justin Kilpatrick , WireGuard mailing list Content-Type: text/plain; charset="UTF-8" X-Mailman-Approved-At: Mon, 11 May 2020 08:11:22 +0200 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" 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? On Wed, May 6, 2020 at 6:26 PM Jason A. Donenfeld wrote: > > On Wed, May 6, 2020 at 4:24 PM Justin Kilpatrick wrote: > > > > > 1340 or 1360 > > > > Why two options? I've been using 1340 for a long time. > > WireGuard over IPv4 has a 60 byte overhead. WireGuard over IPv6 has an > 80 byte overhead.