Date: Fri, 11 Apr 2008 14:24:44 +0200 From: Anders Nordby <anders@FreeBSD.org> To: "Bjoern A. Zeeb" <bz@FreeBSD.org>, freebsd-net@FreeBSD.org Subject: Re: TCP options order changed in FreeBSD 7, incompatible with some routers Message-ID: <20080411122444.GA24519@fupp.net> In-Reply-To: <20080409082153.W66744@maildrop.int.zabbadoz.net> References: <f90b44e40803111756h517b373ala8afdff9395b7fac@mail.gmail.com> <47D860AC.6030707@freebsd.org> <f90b44e40803201909i2aab437bp58bc06755f60500f@mail.gmail.com> <f383264b0803211553s6651fec4lb4b6f2a2f2e4af4a@mail.gmail.com> <16497816.post@talk.nabble.com> <20080409075552.GA19027@fupp.net> <20080409082153.W66744@maildrop.int.zabbadoz.net>
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Hi, On Wed, Apr 09, 2008 at 08:23:13AM +0000, Bjoern A. Zeeb wrote: >> I had the same problem, and temporarily worked around it by disabling >> SACK: > ok, here we go... > > as I had explained on freebsd-net@ lately there had been 2 changes to > possibly fix this issue. > > I am currently in the process to find out which of the two is actually > needed and which of the two prior versions caused the problems. > > I have a testbed setup and will have it running for another day or so. > > So could you try to reproduce your problems with the following three > servers (if you could ask your affected customers to test and > report back to you that would be highly appreciated as well). I just got access to a remote PC which has the problem, finally. It runs Windows 2000, service pack 4. > Simply open the following URLs in a browser is enough. If you can > see the pages, fine. If you cannot, tell me which worked, which > didn't. > > http://tcptest1.sbone.de/ This URL does not work, I get "siden kan ikke vises" (page can not be displayed in Norwegian). > http://tcptest2.sbone.de/ This URL works fine, I get the FreeBSD 7.0 TCP options test page. > http://tcptest3.sbone.de/ This URL does not work, I get "siden kan ikke vises" (page can not be displayed in Norwegian). > I have a tcpdump running on my side so all connections will be fully > logged. Good. Your patch on http://sources.zabbadoz.net/freebsd/patchset/20080309-01-tcp-options-padding.diff fixes the problem for me, with SACK still being on as it is by default. I would be much happy if this fix could find it's way to RELENG_7_0 and errata. Thanks a lot! Cheers, -- Anders.
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