From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rainer Ellinger Subject: Re: "unclean" ?bug? with dell dns Date: Mon, 9 Sep 2002 20:27:10 +0200 Sender: netfilter-admin@lists.netfilter.org Message-ID: <200209091948.1734@ellinger.de> References: <20020827025542.A15684@yannick.lesaint> <20020828132419.GC21410@morinfr.org> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20020828132419.GC21410@morinfr.org> Errors-To: netfilter-admin@lists.netfilter.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: Guillaume Morin , Yannick Le Saint Cc: netfilter@lists.netfilter.org Guillaume Morin wrote: > > When i "dig www.euro.dell.com", i get in syslog : > I'd say that unclean matches the packet because of a checksum > mismatch. There must be a buggy router between you and the server. I ran into the same problem and can also confirm that this is a problem=20 with dell's nameserver or a system on dell's side. Further=20 investigation with ethereal showed that matching pakets had their udp=20 crc set to 0x0000. My questions are:=20 Should this condition really considered harmful and matched by unclean? Why is there no corresponding log message from the unclean module? --=20 rainer@ellinger.de