From owner-freebsd-net@freebsd.org Wed Jul 18 01:57:51 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 57BB7102F291 for ; Wed, 18 Jul 2018 01:57:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id E2C6382BE3 for ; Wed, 18 Jul 2018 01:57:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id A43C9102F28B; Wed, 18 Jul 2018 01:57:50 +0000 (UTC) Delivered-To: net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 929FE102F28A for ; Wed, 18 Jul 2018 01:57:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 32A5C82BDF for ; Wed, 18 Jul 2018 01:57:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 544C325797 for ; Wed, 18 Jul 2018 01:57:49 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w6I1vnPN044173 for ; Wed, 18 Jul 2018 01:57:49 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w6I1vnjE044172 for net@FreeBSD.org; Wed, 18 Jul 2018 01:57:49 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 229432] 11.2 network em driver - connection link flaps with dhclient and option 26 (interface mtu) Date: Wed, 18 Jul 2018 01:57:48 +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: 11.2-RELEASE X-Bugzilla-Keywords: IntelNetworking, regression X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: commit-hook@freebsd.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: eugen@freebsd.org X-Bugzilla-Flags: 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: 2.1.27 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Jul 2018 01:57:51 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229432 --- Comment #8 from commit-hook@freebsd.org --- A commit references this bug: Author: eugen Date: Wed Jul 18 01:57:13 UTC 2018 New revision: 336440 URL: https://svnweb.freebsd.org/changeset/base/336440 Log: MFC r336195: unbreak dhclient(8) option 26 processing Make dhclient(8) verify if new MTU (option 26) differs from current one and skip unneeded MTU change. This check eliminates infinite loop of MTU change / link flap / lease verification / MTU change / link flap etc. in case of some NIC drivers like em(4) or igb(4). PR: 229432 Approved by: mav (mentor) Changes: _U stable/11/ stable/11/sbin/dhclient/dispatch.c --=20 You are receiving this mail because: You are on the CC list for the bug.=