From owner-freebsd-stable@FreeBSD.ORG Mon Jan 23 21:42:31 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1E9D216A41F for ; Mon, 23 Jan 2006 21:42:31 +0000 (GMT) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (Odin.AC.HMC.Edu [134.173.32.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9304743D94 for ; Mon, 23 Jan 2006 21:42:27 +0000 (GMT) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (localhost.localdomain [127.0.0.1]) by odin.ac.hmc.edu (8.13.0/8.13.0) with ESMTP id k0NLgQeH028415; Mon, 23 Jan 2006 13:42:27 -0800 Received: (from brdavis@localhost) by odin.ac.hmc.edu (8.13.0/8.13.0/Submit) id k0NLgQXf028414; Mon, 23 Jan 2006 13:42:26 -0800 Date: Mon, 23 Jan 2006 13:42:26 -0800 From: Brooks Davis To: Krzysztof Kowalik Message-ID: <20060123214226.GA11995@odin.ac.hmc.edu> References: <43D339CC.3020204@forrie.com> <20060122155131.GA823@the-grills.com> <20060122221828.GA7703@odin.ac.hmc.edu> <20060123090656.GA22255@uci.agh.edu.pl> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9jxsPFA5p3P2qPhR" Content-Disposition: inline In-Reply-To: <20060123090656.GA22255@uci.agh.edu.pl> User-Agent: Mutt/1.4.1i X-Virus-Scanned: by amavisd-new X-Spam-Status: No, hits=0.0 required=8.0 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on odin.ac.hmc.edu Cc: freebsd-stable@freebsd.org Subject: Re: dhclient wedged X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Jan 2006 21:42:31 -0000 --9jxsPFA5p3P2qPhR Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jan 23, 2006 at 10:06:56AM +0100, Krzysztof Kowalik wrote: > Brooks Davis wrote: > > This definitly sounds like something particular to your dhcp servers. > > It would be nice if we could fix it, but without some debugging help > > that's going to be pretty much impossible. [...] >=20 > It happens to me quite often, too. The only thing related in the > non-debug messages is: >=20 > Jan 8 12:02:19 moneypenny dhclient[68091]: 5 bad IP checksums seen in 5 = packets > Jan 8 12:02:49 moneypenny last message repeated 743054 times > Jan 8 12:04:50 moneypenny last message repeated 2951866 times > Jan 8 12:14:51 moneypenny last message repeated 14457921 times > Jan 8 12:24:52 moneypenny last message repeated 14812032 times > Jan 8 12:34:53 moneypenny last message repeated 14770327 times > Jan 8 12:44:55 moneypenny last message repeated 14748300 times > Jan 8 12:51:44 moneypenny last message repeated 10037074 times >=20 > ... which accounts for the CPU usage, I guess. I killed the "bad IP > checksums" messages, so it doesn't annoy my syslog anymore, but it of > course didn't fix the underlaying issue.=20 >=20 > I was looking at those packets with tcpdump once and didn't see anything > obvious/bad there. >=20 > And yes, I didn't have this problem with ISC client. And I surely use > different cable provider, than the original poster ;) What NIC are you using? This particular issue sounds like a NIC returning corrupt packets for some reason. Alternatively, the sending server could be producing corrupt packets. Some tcpdump traces (preferably raw dumps) could be useful. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --9jxsPFA5p3P2qPhR Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFD1U3CXY6L6fI4GtQRAtvvAJ9OT5rNrfjES1ehZRh8ZW5ok2ET2wCfXq52 inlkFcP2RbSiIHiszJecr3Y= =mxNG -----END PGP SIGNATURE----- --9jxsPFA5p3P2qPhR--