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 Received: from lists.zx2c4.com (lists.zx2c4.com [165.227.139.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 40A36EE4993 for ; Wed, 23 Aug 2023 16:19:58 +0000 (UTC) Received: by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 0eca4422; Wed, 23 Aug 2023 16:07:17 +0000 (UTC) Received: from mail-200166.simplelogin.co (mail-200166.simplelogin.co [176.119.200.166]) by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id 428d7590 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for ; Thu, 17 Aug 2023 20:15:13 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; d=simplelogin.co; s=arc-20230626; t=1692303313; cv=none; b=0rS2CERjL+wM09WY/+fbv7se7i16DkshhJXVgF5V/CKUE9FXhzWYxZa8oV+9HkJTg1wYUxF+6m6Uya7zbywZeGnhZfCu8yZyRmwRZenR1LzKEhM6p4xOaJE/ClN7HnAnURPwaMgxnx4hptHG6fYFaAKm+okHK3/OtSNdBH9GsI73t4OuMG8jbDY45tdhctCTVCkKFfGtegmHWXbJjA9Vx0sTzZldlObUV40wzbb1Dw+7TGnmsgTdq2GrJxnjdRasamR72aPBJx/3QP2lQTntTaXA6H3BmX0XgJY1z/yycGZl3ASsy8N8GZtKqjYQGFErfgGSi8kIx8/SUiobuOXEJQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=simplelogin.co; s=arc-20230626; t=1692303313; c=relaxed/simple; bh=ZmrjpcF94IqYv5MJfqd3+Q2lVNCsOsSHL5J9w64Y0N4=; h=DKIM-Signature:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:From:To:Message-ID:X-SimpleLogin-Type: X-SimpleLogin-EmailLog-ID:X-SimpleLogin-Want-Signing; b=3L3tyX2CtJm73nWSWYghOk/qA6Ueu8ys1uLUJnnvvBqlASyOxUd+2yYvrsqH3VkL2vZrtlZ9TjfEjlGGmYRVrWr16KZJUavjarjF3h2UE5SYzCAPQcfMnKiAUvvmDnGAOkCpQqex6llccgrAuwkm9Y3qgWxbnjcc11FNa9dafbM0pd2suQkocb+cVYBlcT8vXToml6B8JwsLW8ZiLkMoRItnifCw2mKECUkdMhxnJoglvFSEKii/xXDBzrt1X4Xs8US06B23ZayTv7XsWdC76ST7mLavOY9vTAaqeu47qeBctBbH0Ru21/IJa+A4YvUJv2/QM7XPnRki/2kW3/RwBA== ARC-Authentication-Results: i=1; mail.protonmail.ch DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=simplelogin.com; s=dkim; t=1692303312; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=ZmrjpcF94IqYv5MJfqd3+Q2lVNCsOsSHL5J9w64Y0N4=; b=f93P2FpkjLSCaiDIZsNu93poWccel9xYU63vytgqNBnxgeZFJ51siSXOsFDPLAjFpcWUZ7 dyivCkWq1LIHD8FFIAdB9NVxUROlniaFdArLjR8zH7Y0Q+9gUwlf+jRKdmmagQAKdR9iOP 1BFFALIe1xmoP1YvTeu+PluWybd0+wY= Date: Thu, 17 Aug 2023 20:14:52 +0000 Subject: Re: [WireGuard] Header / MTU sizes for Wireguard MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: blurt_overkill882@simplelogin.com To: wireguard@lists.zx2c4.com Message-ID: <169230331253.7.2936868369217934671.167170975@simplelogin.com> X-SimpleLogin-Type: Reply X-SimpleLogin-EmailLog-ID: 167170975 X-SimpleLogin-Want-Signing: yes X-Mailman-Approved-At: Wed, 23 Aug 2023 16:07:07 +0000 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" Hello, I hope this is the right place. I see here[1] that if you're using IPv4 exclusively, you can get away with = an MTU of 1440. If my client only has IPv4 internet, however the server iss= ues an IPv6 address for use by the client, can the client still use 1440 wi= thout fragmentation, or must the client use 1420, because even though their= connection is IPv4, they are issued an IPv6 address within the tunnel? [1] https://lists.zx2c4.com/pipermail/wireguard/2017-December/002201.html Thanks in advance!