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=-2.8 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 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 900BFC433E0 for ; Wed, 10 Mar 2021 13:37:45 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 7E23E64FE8 for ; Wed, 10 Mar 2021 13:37:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7E23E64FE8 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 lists.zx2c4.com (ZX2C4 Mail Server) with ESMTP id adb4d250; Wed, 10 Mar 2021 13:37:30 +0000 (UTC) Received: from mail-lj1-x236.google.com (mail-lj1-x236.google.com [2a00:1450:4864:20::236]) by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id 09b02f76 (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO) for ; Wed, 10 Mar 2021 13:37:29 +0000 (UTC) Received: by mail-lj1-x236.google.com with SMTP id q14so25621002ljp.4 for ; Wed, 10 Mar 2021 05:37:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=RtKqW2Q6RG46reMA5DNaHJcraOb/Y7VmKBtKopMLUq4=; b=O3HSY1HWGi7Q74rfCLfH02NcqqMh5EwC7wR7x+9VrxnphRMq8KLb99fAqHXdgSpMYj BOBIp7cfTyDeHazZx97mIXW/zluLXUY/KsqACnobdAW+VWFRfFH1brtvJkOPh8meFT/o D80xJwVCRjIt8I2p1iVcxE99xexKq74lyHjzmSm/drjl8lQ+KLsuWYChBI4Z3At9DVHO 8X2omYkyBe9yztY7QN4KTw3cS6rOjB/4XVhqTT2txF1Bi/cvGx0o3JACLtIE0yIdyCxc BQUORADbUIzDTPoXI27c4xuJy8RWSK/F0hU5VXdI4LNLPL382WPj/TQ2jDiyru+t2arn k/og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=RtKqW2Q6RG46reMA5DNaHJcraOb/Y7VmKBtKopMLUq4=; b=qQjtye7KugUsTyuZFsPgM5oE4/sxv6okOcbp0XgcBomFZKUJuUQGyGNYa3qih0PPsr 8cc55y2BOXWgwdeiBMaTPS4IVUbyoSQdZYlOT1fuIHXYGVZS/VVlnavL3s2ugCySs7z9 5zzGLbq7i5sIfCDYL1oR/jUuIPKDDnzTJkKRh0YkkFM3VLAh35K5FsGM2J+U2zJ3PPJB kYe0Gse7RMZXaCfSP/8Ycr0WqsKlyiPs7GgQ9XvZie+ztoFD9uZKbnmLTVzmYTW9ShV3 0D6RtwrFGZMC8q3JBeEN9ihwgHu8Hd6lI8IH7Xck8AHCCRmSTasqVJ25dxJaxfeF34jG kdnQ== X-Gm-Message-State: AOAM5322VpuyJI+pIuocN8YO3W5PeQ8jSQaCTIFHLrAwEo1+TcQmLij8 S+rd5drUcekmCz10wE+yqsFWmjkMOgL4u8nBcs3uQUUlhPA= X-Google-Smtp-Source: ABdhPJy9NkcqKmq6hMmK/fKdC/ROzkKoMsJLwCWDllaqL8QqoKPM65Cv7Ql19hYx8BFnxI9YajvTtWgXAy63dGSNdvo= X-Received: by 2002:a2e:7505:: with SMTP id q5mr1901179ljc.322.1615383448532; Wed, 10 Mar 2021 05:37:28 -0800 (PST) MIME-Version: 1.0 From: kay Date: Wed, 10 Mar 2021 14:36:52 +0100 Message-ID: Subject: Windows: wintun MTU is not set To: wireguard@lists.zx2c4.com Content-Type: text/plain; charset="UTF-8" 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 Everyone, I noticed that the desired MTU is not set on the wintun interface. I tried to set MTU after I create an interface: interfaces, err := winipcfg.GetIPInterfaceTable(windows.AF_UNSPEC) if err != nil { return err } for _, iface := range interfaces { if iface.InterfaceLUID == luid { log.Printf("Iface: %+#v", iface) iface.NLMTU = 1302 err = iface.Set() if err != nil { log.Printf("failed to set MTU: %s", err) } } } but it fails with "The parameter is incorrect." for AF_INET. Setting MTU for AF_INET6 works with no issues. Any idea how I can set MTU without netsh? Regards,