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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!metro!munnari.OZ.AU!news.ecn.uoknor.edu!news.ysu.edu!usenet.INS.CWRU.Edu!gatech!news.mathworks.com!news-peer.gsl.net!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!daily.bbnplanet.com!not-for-mail From: Larry Todd <ltodd@bbnplanet.com> Newsgroups: comp.unix.bsd.bsdi.misc,comp.unix.bsd.misc Subject: tcpdump - packet length errors Date: Thu, 29 May 1997 17:59:35 -0400 Organization: BBN Planet Lines: 15 Message-ID: <338DFC47.273C@bbnplanet.com> NNTP-Posting-Host: pucks.bbnplanet.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01 (X11; I; SunOS 5.5.1 sun4m) Xref: euryale.cc.adfa.oz.au comp.unix.bsd.bsdi.misc:6940 comp.unix.bsd.misc:3450 When I run tcpdump (ver 2.4 I think) on an ethernet interface on a system running BSDI 2.1, I quite often get kernel errors indicating "bad input packet length" with a very small packet length displayed (in the range of 9 to 14 bytes). When these errors occur, they stream constantly until such time as I kill the tcpdump process. Is this a known problem? Is there a fix? Is more system specific information required to isolate the problem? Larry T. Todd BBN Corporation Internet Support Engineer 150 Cambridge Park Drive Cambridge, MA. 02140 email: ltodd@bbnplanet.com