Date: Wed, 10 Jan 1996 15:59:29 PST From: Bill Fenner <fenner@parc.xerox.com> To: Michael Smith <msmith@atrad.adelaide.edu.au> Cc: taob@io.org (Brian Tao), freebsd-hackers@freebsd.org, freebsd-isp@freebsd.org Subject: Re: A few other concerns from a FreeBSD ISP Message-ID: <96Jan10.155941pst.177478@crevenia.parc.xerox.com> In-Reply-To: Your message of "Sun, 07 Jan 1996 02:54:31 PST." <199601071054.VAA20347@genesis.atrad.adelaide.edu.au>
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In message <199601071054.VAA20347@genesis.atrad.adelaide.edu.au>you write: >It's possible that the remote host is reusing an originating port number >that is still recorded by the FreeBSD system as belonging to a connection >in one of the closing wait states to that same host. I don't know what >would happen here, it's possible that someone got their TCP state diagram >confused. I have always thought that this situation could only be attributed to one or the other end not waiting for 2*MSL before deleting connection information. In particular, if the source end cut its TIME_WAIT state short for some tcpcb, that port number could get reused while the server end was still in TIME_WAIT and thus completely ignoring all packets. But I haven't yet gotten around to testing this theory; I can't say that I recall seeing this problem, so it may also be load-related, etc. Bill
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