Date: Sun, 24 Aug 2008 07:21:09 -0400 From: Mike Tancsa <mike@sentex.net> To: Julian Elischer <julian@elischer.org>, Kip Macy <kmacy@freebsd.org> Cc: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, freebsd-net@freebsd.org Subject: Re: strange TCP issue on RELENG_7 Message-ID: <200808241121.m7OBL4Pn000366@lava.sentex.ca> In-Reply-To: <48B0FD43.2090705@elischer.org> References: <200808221719.m7MHJY25090566@lava.sentex.ca> <20080822191146.T66593@maildrop.int.zabbadoz.net> <200808221922.m7MJMcUN091064@lava.sentex.ca> <3c1674c90808231916l2c92a8e4sae0f191af31b5870@mail.gmail.com> <200808240312.m7O3CZS0098145@lava.sentex.ca> <48B0F722.3050005@elischer.org> <3c1674c90808232255s30a6fce7ma8e081e935a6adbc@mail.gmail.com> <48B0F8AD.1090601@elischer.org> <3c1674c90808232305s42cc9187k58e195d5092261e1@mail.gmail.com> <48B0FD43.2090705@elischer.org>
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At 02:18 AM 8/24/2008, Julian Elischer wrote: >ok so it might be related to the MRT code... > >I assume he only has one Routing table.. Yes, just one routing table >Theoretically it shoudl work the same as before if N==1 >but I can imagine a case where it didn't. >especially if arp and interffaces are involved.. > >Mike, can you give me a repro example? I am not sure how, but it happens on this machine within seconds of all its applications starting up. I am speculating it has to do with the fact the machine has multiple public interfaces as well as IPs aliased to lo0 so that packets will come in em1 destined for em1 and lo0, but will always go out em0 ? The same for the kernel from HEAD shows the same behaviour. The problem started with the tcp offload code http://lists.freebsd.org/pipermail/freebsd-stable/2008-August/044468.html has more details ---Mike
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