Date: Mon, 23 Oct 2000 15:05:10 +1100 (EST) From: Stanley Hopcroft <Stanley.Hopcroft@IPAustralia.Gov.AU> To: freebsd-questions@FreeBSD.oRG Subject: Re: tcpdump doesn't work properly (filter expressions break normal output) in 4.0, 4.1-R Message-ID: <Pine.BSF.4.21.0010231503460.20386-100000@stan.aipo.gov.au> In-Reply-To: <Pine.BSF.4.21.0010231457320.20386-100000@stan.aipo.gov.au>
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On Mon, 23 Oct 2000, Stanley Hopcroft wrote: > Dear Ladies and Gentlemen, > > I am writing to say that I think there is something wrong with > libpcap/bpf/tcpdump shipped with 4.0-RELEASE and 4.1-RELEASE. > > The problem is that as soon as filter expression is given to tcpdump eg > tcpdump -x -s1500 -l port telnet, then the only packets displayed are > those from the localhost (that running tcpdump); the replies are *not* > shown. > > If the filter is removed, both client and server packets are displayed. I think this is a FreeBSD problem since ethereal behaves exactly the same way (and therefore the problem is perhaps in libpcap or the bpf code) > > Thank you. > > Yours sincerely, > > > S Hopcroft > > Network Specialist > IP Australia > > +61 2 6283 3189 > +61 2 6281 1353 FAX > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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