From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 4E965138CA3 for ; Thu, 5 Mar 2015 21:39:12 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id E833DE0966; Thu, 5 Mar 2015 21:39:06 +0000 (UTC) Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 8CED0E093E for ; Thu, 5 Mar 2015 21:39:05 +0000 (UTC) Received: from marcec.fritz.box ([93.181.44.4]) by mail.gmx.com (mrgmx002) with ESMTPSA (Nemesis) id 0Lx83d-1XNYHZ0ubZ-016c5Z for ; Thu, 05 Mar 2015 22:39:04 +0100 Date: Thu, 5 Mar 2015 22:38:58 +0100 From: Marc Joliet To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Strange network behaviour: NIC goes down, DHCP lease renewal fails Message-ID: <20150305223858.744b1cb2@marcec.fritz.box> In-Reply-To: <20150305183323.GA7189@ns1.bonedaddy.net> References: <20150305104625.2d88242a@marcec.fritz.box> <20150305183323.GA7189@ns1.bonedaddy.net> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/cFpLEU=h=2ZGXcY3AQlJlrI"; protocol="application/pgp-signature" X-Provags-ID: V03:K0:yQahT1fuJuDbaKhXZWPufDbrssTPnSrjukzX73ctYbNbMx13T8u 24wA6R7SCLCBTWLTVytQfL4obL5pj/YUfXPt1Gjua4gBaCmlLyDAFB7CgojWmztOWtzina+ 2OTgd5ALVYiv0FgLLArvVODcdRA0yw6ADlaprGg6Xxr+oIsYIMPMqZNWxUjYu21zesP06kL eQb8P/nWB42mNLGvg6QaA== X-UI-Out-Filterresults: notjunk:1; X-Archives-Salt: 2f851314-e99b-48e2-811d-7493332e836b X-Archives-Hash: 2ca87cc5c19421b885155e3b527594ca --Sig_/cFpLEU=h=2ZGXcY3AQlJlrI Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Am Thu, 5 Mar 2015 13:33:23 -0500 schrieb Todd Goodman : > * Marc Joliet [150305 04:47]: > [..SNIP..] > > 1.) The NIC is brought up (some built-in Intel model). > >=20 > > 2.) A DHCP client configures it. > >=20 > > 3.) The network connection is lost at some point (the amount of time th= is takes > > varies, but it can be as little as 20 minutes). > >=20 > > 4.) Eventually the lease runs out and the DHCP client tries to renew it= , but > > gets no response. Sometimes, after many hours (at least 6), it wil= l get a > > DHCPACK, but that's it. One of our sysadmins says that not only do= es > > the DHCP server never see the packets, but the managed switch that = the PC > > is directly attached to *also* never does (again, except for when t= he > > occasional DHCPACK comes). > >=20 > > 4.) Restart the network device. A reboot is not required, but it is ne= cessary > > to terminate the DHCP client. After that everything works again. > >=20 > > 5.) GOTO 3. > [..SNIP..] >=20 > Is this a WiFi NIC? Nope, it's wired. > Is it possible the device is powering down? I mentioned the possibility, but don't find it *that* credible, since three different PCs (with different NICs) have shown the problem. Plus, sometime= s the one affected PC I work on can still reach the internet (i.e., a browser wor= ks), even though it has already ceased to be reachable. [...] --=20 Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup --Sig_/cFpLEU=h=2ZGXcY3AQlJlrI Content-Type: application/pgp-signature Content-Description: Digitale Signatur von OpenPGP -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBAgAGBQJU+Mz2AAoJEL/Q5oYsiHj0zeYQAI+a03GKjeNKaoNH8ncS46Ob Gsn/1H84YsV+HikZPUfnjS3tBW9fdGtJQ4jmat2oVw8/Wi9WoNoWKo0wjCpqKdZs S46U2LXkrlNFR4WOkWhCfGFNyi7gj6N7Eubh0Pf5iF+ZdDmD8CxvJQYS26lx2ZkV Rizc7jyOAVunKA09x6aZ7ii09SCyBwR674ArRZjCcODW0rIMIBS6MtCbgRxVdErS 7+tzd6ro9LzOiADE+YHANYoappEDeeWAdiudcVHwN49Rn2CSol2tzDIUMFqe09V+ v1cf2HiRxAA+zlGhHeg0pI3IxeYHUjPB53H1mVF8fNMRf5rchra2adZioEMqpC3l 4UdolyfkZGFWvfIVZvk1LGiFpcCMCIREBrKOPsubxO63M9w+Kf5K7FeyzaNSqVCi idOMyU9OTQWgahIN/LiJ34EU+cQrnQH4bSlRD8bNQ1Q/EgvihAPns75nxZOKHfJV uGrJh9h6I6A+IwsFKC+/3ph2QlKHdF+EB+G/mDufE/o/XjE52bIPCzgnjkdwkLLz vasYW04rQpW8VAiHdqpXkZi89dm2kSHi6hEb0LMR6z02xfBgHsqXw46kImcmW+PD JeiQC5MV2EMjJs31hWfUH2WYSGUCQ4skRcbb0dhi37QEoK86+d5sqOmSUp09VTwE bQqSjfVf/Nc4pLDjX8j4 =Q1yc -----END PGP SIGNATURE----- --Sig_/cFpLEU=h=2ZGXcY3AQlJlrI--