Date: Fri, 17 Jan 1997 12:20:48 -0500 From: Howard Goldstein <hgoldste@bbs.mpcs.com> To: freebsd-current@freebsd.org, brian@mpress.com Subject: tcp_extenions=NO between to FreeBSD Hosts!? Message-ID: <199701171720.MAA04293@bbs.mpcs.com> In-Reply-To: <19970112060920.20637.qmail@mpress.com>
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In article <19970112060920.20637.qmail@mpress.com>, you wrote: : The following two hosts : : FreeBSD top.mediacity.com 3.0-CURRENT FreeBSD 3.0-CURRENT #0: Sat Jan 11 01:17:49 1997 brian@research.mpress.com:/uss/src/sys-UP/compile/LAPTOP i386 : : FreeBSD garfield.panix.com 2.2-BETA_A FreeBSD 2.2-BETA_A #0: Sat Jan 11 20:33:29 PST 1997 larry@garfield.panix.com:/usr/src/sys/compile/LAPTOP-PCD i386 : : cannot talk tcp between each other unless one of us has issued the command: : : sysctl -w net.inet.tcp.rfc1644=0 : : so is the problem one of us, or a router in between us? It still might be one of you. There's a long standing reported bug (kern/1xxx something) in the tcp extensions hosing the RTT calculations on routes with latencies on the order of 28.8 dialup lines. If it doesn't crap out on an ethernet then you've found the same bug. -- Howard Goldstein <hgoldste@bbs.mpcs.com>
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