From owner-freebsd-net@FreeBSD.ORG Tue Jul 16 12:57:34 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 54F71703 for ; Tue, 16 Jul 2013 12:57:34 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from nm1-vm4.bullet.mail.ne1.yahoo.com (nm1-vm4.bullet.mail.ne1.yahoo.com [98.138.91.161]) by mx1.freebsd.org (Postfix) with ESMTP id 08CB03F4 for ; Tue, 16 Jul 2013 12:57:33 +0000 (UTC) Received: from [98.138.90.48] by nm1.bullet.mail.ne1.yahoo.com with NNFMP; 16 Jul 2013 12:54:29 -0000 Received: from [98.138.101.169] by tm1.bullet.mail.ne1.yahoo.com with NNFMP; 16 Jul 2013 12:54:29 -0000 Received: from [127.0.0.1] by omp1080.mail.ne1.yahoo.com with NNFMP; 16 Jul 2013 12:54:29 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 12828.88058.bm@omp1080.mail.ne1.yahoo.com Received: (qmail 60674 invoked by uid 60001); 16 Jul 2013 12:54:28 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1373979268; bh=CLKZ4PSdOQ/bC99HHPAhhO1lgShuiIwrqDe7dATDaHw=; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=0WIgAcQoW3KtczszygLLAsCM6qJhF1lvO0mKDpEiNvc/Td3MiHw//B64LW6MPugx9cOJsiTcGIkvi7o3EHiZhRX9cg8YaTc7xQzZXfpEMse5WJJwfN5+5aW3XID08/qiy2Ff/2tC+xY0vV8ZoS1bU+VzDFlL1W10iYWCypyIQ00= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=POVoFzqlsm7HORYY4S3VsYHKLa/QBtqGmWRqxUFdFIRk+Ulwd0x+Jk0/IgrH4GROewNmYyEJ8yA17FeBcwVj6MQd1wzQyMQpzVK+yoWh0az1rr9F5CRHA+TgAVjXrEU08LNUJjd3s1jFg8hIYl/KTa205+whY73JQQjo/vH2vvo= ; X-YMail-OSG: AKspF7oVM1kiiWKvkbMe3l43VD7422Gslg5kHVgnMBs3SVJ mG6ls1cQlrqeXTOZlxqC7PXIHdVJfhrPhTHXoWt9FVIOyjgMkzW3EVJke9NW kiE2unuT4p5fAlvmLE17qxgevcowb2HfOFWLm_bYHTRSZQKULoBPpVSh0KSz 0inJGjGsfvqkjTK1COO84BCgfhB4TxxmvRk9kehxe9xwH_QuPo4aKDkpuuEK PFcoMlDnSHCeocp2zNZ6otmATbuFG6P6pHrMQ8cGyzUg2aiVDS.lMg2XNkfo W6ZO7QqqPCO8BA1CS7ptFc5ImV8_0OcUC1goMmJFdcbCRAqqjKIuIaAk_1oR Uku.MPTvR8RwZ2zDUCEMCUObdRAzhIQo_xPjlG9RLG6OmV8VzeCWSgSci9Po vrfktnkT6zGHm54moLd0BJtTLNxdD4TH4_d3t6R93bg1bDqCNVc1lmzn3ysE f84NFjaDf2DKVBYdDdQzRyoocL4Eb6bxyKbXGbz2P4ZpX3vCWSi_U4ggJY8T GRbgtsngejTwVBsqF3HF18ywMUmMeIVy4xpVprAIXA_doZn8Ulf0JxBWwz9j GNvUwESiss7LCY_2w Received: from [98.203.118.124] by web121605.mail.ne1.yahoo.com via HTTP; Tue, 16 Jul 2013 05:54:28 PDT X-Rocket-MIMEInfo: 002.001, DQotLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQ0KT24gVHVlLCA3LzE2LzEzLCBFdWdlbmUgR3Jvc2JlaW4gPGV1Z2VuQGdyb3NiZWluLm5ldD4gd3JvdGU6DQoNCiBTdWJqZWN0OiBSZTogRnJlZUJTRCByb3V0ZXIgcHJvYmxlbXMNCiBUbzogIkJhcm5leSBDb3Jkb2JhIiA8YmFybmV5X2NvcmRvYmFAeWFob28uY29tPg0KIENjOiBmcmVlYnNkLW5ldEBmcmVlYnNkLm9yZw0KIERhdGU6IFR1ZXNkYXksIEp1bHkgMTYsIDIwMTMsIDE6MTAgQU0NCiANCiBPbiAxNS4wNy4yMDEzIDIBMAEBAQE- X-Mailer: YahooMailClassic/1000012 YahooMailWebService/0.8.148.557 Message-ID: <1373979268.60540.YahooMailBasic@web121605.mail.ne1.yahoo.com> Date: Tue, 16 Jul 2013 05:54:28 -0700 (PDT) From: Barney Cordoba Subject: Re: FreeBSD router problems To: Eugene Grosbein In-Reply-To: <51E4D5CC.9030601@grosbein.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jul 2013 12:57:34 -0000 -------------------------------------------- On Tue, 7/16/13, Eugene Grosbein wrote: Subject: Re: FreeBSD router problems To: "Barney Cordoba" Cc: freebsd-net@freebsd.org Date: Tuesday, July 16, 2013, 1:10 AM On 15.07.2013 22:04, Barney Cordoba wrote: > Also, IP fragmentation and TCP segments are not the same thing. TCP > segments regularly will come in out of order, NFS is too stupid to do > things correctly; IP fragmentation should not be done unless necessary > to accommodate a smaller mtu. The PR is about NFS over UDP, not TCP. ------------------ Ok, so is there evidence that it's UDP and not an IP fragmenting problem? Out of Order UDP is the same issue; its common for packets to traverse different paths through the internet in the same connection, so OOO packets are normal. IP fragmentation is rare, except for NFS. A lot of ISPs will block fragmentation because it's difficult to shape or filter fragments; they're often used to defeat simple firewalls and filters. BC _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"