From owner-freebsd-net@freebsd.org Thu Jul 23 11:58:31 2020 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C52DB37C502 for ; Thu, 23 Jul 2020 11:58:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4BC9pH4Xlgz4T5H for ; Thu, 23 Jul 2020 11:58:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 9AC2037C391; Thu, 23 Jul 2020 11:58:31 +0000 (UTC) Delivered-To: net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9A7D237C405 for ; Thu, 23 Jul 2020 11:58:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BC9pH3cgTz4T9j for ; Thu, 23 Jul 2020 11:58:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 5F47818A25 for ; Thu, 23 Jul 2020 11:58:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 06NBwV35085308 for ; Thu, 23 Jul 2020 11:58:31 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 06NBwVDV085307 for net@FreeBSD.org; Thu, 23 Jul 2020 11:58:31 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 248172] if_tuntap(4): OpenVPN configuring tun/tap devices ends up with IFDISABLED interfaces Date: Thu, 23 Jul 2020 11:58:31 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.1-RELEASE X-Bugzilla-Keywords: needs-qa, regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: gert@greenie.muc.de X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: kevans@freebsd.org X-Bugzilla-Flags: maintainer-feedback? mfc-stable12? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Jul 2020 11:58:31 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D248172 --- Comment #20 from Gert Doering --- Just for the record: if I insert a "sleep(1)" in the tester.c between the open() call to /dev/tun0 and the ifconfig statement, *and* insert a "sleep = 1" in pccard_ether between "`ifconfig -ul` and if [ "${uif}" =3D "${ifn}" ] - = then the time window for the race is wide enough that "it always happens". Of course it would be great to find a non-racy solution that does not invol= ve telling users "you must change your rc.conf to make openvpn+ipv6 work relia= bly for you" (they might actually have "on all interfaces" disabled on purpose). But I can already say: thanks for all your help! --=20 You are receiving this mail because: You are on the CC list for the bug.=