From owner-freebsd-hackers@FreeBSD.ORG Tue Jan 3 19:05:54 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 82F87106566C for ; Tue, 3 Jan 2012 19:05:54 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id F2F728FC13 for ; Tue, 3 Jan 2012 19:05:53 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [IPv6:2001:8b0:151:1:fa1e:dfff:feda:c0bb]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.5/8.14.5) with ESMTP id q03J5ikN057298 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Tue, 3 Jan 2012 19:05:44 GMT (envelope-from m.seaman@infracaninophile.co.uk) X-DKIM: OpenDKIM Filter v2.4.1 smtp.infracaninophile.co.uk q03J5ikN057298 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=infracaninophile.co.uk; s=201001-infracaninophile; t=1325617544; bh=6raU1SzhFb2UnZWxmzC4HPf9H/FzgA4i84HN8VoeTKI=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:References: In-Reply-To:Content-Type; b=GH0s0gW/ESol0DhYt93vnWMK5dVWCJYpPJWZmstyXSWJo0Kil9YniTKDFOiVmjqhh ZVY9UUGkJ6DYXXqMF6mnksLaY9lYt71sJYH4q8ioF4H5y8byxX0oeBoQYJVi0qBZSo DiNwGun6jxad9YXlC5aZyL1765eKVAWwLTGlb9zw= Message-ID: <4F035181.9000605@infracaninophile.co.uk> Date: Tue, 03 Jan 2012 19:05:37 +0000 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: Devin Teske References: <04a201ccca33$fe6115a0$fb2340e0$@fisglobal.com> <2092634439.782373.1325609539518.JavaMail.root@erie.cs.uoguelph.ca> <4F0343CE.2080500@infracaninophile.co.uk> <04d901ccca43$126af200$3740d600$@fisglobal.com> In-Reply-To: <04d901ccca43$126af200$3740d600$@fisglobal.com> X-Enigmail-Version: 1.3.4 OpenPGP: id=60AE908C Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig3B01E1F6F6E34AD424C06CF6" X-Virus-Scanned: clamav-milter 0.97.3 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lucid-nonsense.infracaninophile.co.uk Cc: freebsd-hackers@freebsd.org Subject: Re: [ANN] host-setup 4.0 released X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Jan 2012 19:05:54 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig3B01E1F6F6E34AD424C06CF6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 03/01/2012 18:11, Devin Teske wrote: >=20 >=20 >> -----Original Message----- >> From: owner-freebsd-hackers@freebsd.org [mailto:owner-freebsd- >> hackers@freebsd.org] On Behalf Of Matthew Seaman >> Sent: Tuesday, January 03, 2012 10:07 AM >> To: freebsd-hackers@freebsd.org >> Subject: Re: [ANN] host-setup 4.0 released >> >> On 03/01/2012 17:59, Garrett Cooper wrote: >>> 4. Prefixing the IPv6 address with fe80: generally means it's an IPv4= >>> -> IPv6 address (IIRC). >> >> Nope. That's a link-local address. Any NIC can configure itself with= and > address >> using that prefix and a host part generated from the MAC address compl= etely >> automatically, and thus communicate on any locally attached network. (= See RFC >> 5156 for the gory details.) >> >> IPv4 mapped addresses are like this: >> >> ::ffff:192.0.2.0 >> >> (or you can express the 32 bits of the IPv4 address as two colon-separ= ated hex >> strings in the usual IPv6 idiom.) >=20 > Out of curiousity, when did the spec change from single-octets to doubl= e-octets? >=20 > I remember early-on seeing IPv6 addresses represented in a form that re= sembled > MAC address specifications. AFAIK, it's been groups of up to four hex digits from the start -- certainly it's been that way for 15 years or more. At least, I've never seen anything different, other than the special exemption for IPv4 mapped addresses. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enig3B01E1F6F6E34AD424C06CF6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk8DUYgACgkQ8Mjk52CukIy5vQCbBOl6j3bZwsOQPSbNRHjKu3dm R4UAn2I9d+wgcc/2vMiG6LVdlQz0Wmfj =ck0D -----END PGP SIGNATURE----- --------------enig3B01E1F6F6E34AD424C06CF6--