From owner-freebsd-net@FreeBSD.ORG Sat Mar 10 00:41:22 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 53774106564A for ; Sat, 10 Mar 2012 00:41:22 +0000 (UTC) (envelope-from annonymouse@gmail.com) Received: from mail-vx0-f182.google.com (mail-vx0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id 0B59C8FC15 for ; Sat, 10 Mar 2012 00:41:21 +0000 (UTC) Received: by vcmm1 with SMTP id m1so2408972vcm.13 for ; Fri, 09 Mar 2012 16:41:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=YWiMALv5f7m1scMLSrK1XVMcBt8fXX+84a7mWVFKRUM=; b=qcvM4KYjJoQLjbv6TPvqegXAVVBmCLlTaQ84gG+lD+0u7ADnV7rBclbkzgrNdyUnO+ U/2vXeAHKXw8TxD8DAQI9CFfF0zhhs9OJIXAI7R5eiQ+e37fOYCA04/KYBiIhPWf90Xt G/wVwpd5UgwvAwwTIrBVMG4Y2rQJmtjeIE9fuAex6kABi/JcIUx0FGoH0UFCjzfYPZkV i31bmIsp+qgz8YFLgzzW8NRpseRGvdF9ZCEPb5rCcvciPSGysoh/ZjUMgzXholiL1e3x GkWcD95vGy5X1MnK93izU0BuI8nnjBgREsjGYKTLL7OY/F5A03tMJis1vhT1D0cjuQ+2 W8+Q== MIME-Version: 1.0 Received: by 10.52.27.1 with SMTP id p1mr7328933vdg.17.1331340081449; Fri, 09 Mar 2012 16:41:21 -0800 (PST) Sender: annonymouse@gmail.com Received: by 10.220.118.19 with HTTP; Fri, 9 Mar 2012 16:41:20 -0800 (PST) In-Reply-To: <4F5A9A34.8080303@FreeBSD.org> References: <4F5A9A34.8080303@FreeBSD.org> Date: Sat, 10 Mar 2012 00:41:20 +0000 X-Google-Sender-Auth: b9QLoFa39_9UFuwn3v1VBARbzYo Message-ID: From: Alex Yong To: Doug Barton Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-net@freebsd.org Subject: Re: Strong host model in IPv6? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Mar 2012 00:41:22 -0000 On 10 March 2012 00:03, Doug Barton wrote: > So I guess I'll re-ask the question here: According to > https://tools.ietf.org/html/rfc1122 that RFC has been updated quite a > bit over the last 23 years. Have you followed that chain upwards to make > sure that your concerns are still valid? > > > Doug > My question is perhaps not phrased brilliantly. I shouldn't have used the word "specified" when talking about the RFC and maybe re-written my question so apologies - it's late here. To sum up, is FreeBSD intended to support the strong host model for IPv6 as described in that RFC? As my tests don't seem to show it as not doing so, which seems contrary to what the KAME book suggests. However I can't find any specific wording on this on the internet or freebsd site. If this is so, is there any sysctl or other mechanism which I've missed which enables said strong host model - or am I stuck? As you have pointed out, RFC 1122 is 23 years old and covers a lot of the basics of what IP networking is and as a result has a significant number of updating RFCs. I simply point to it for the definition of strong ES model which is not redefined, and is referenced in the FreeBSD code base for at least IPv4 in ip_input.c. Next time I'll just say "strong host model". AlexY