Date: Tue, 3 Jan 2012 10:11:04 -0800 From: Devin Teske <devin.teske@fisglobal.com> To: "'Matthew Seaman'" <m.seaman@infracaninophile.co.uk>, <freebsd-hackers@freebsd.org> Subject: RE: [ANN] host-setup 4.0 released Message-ID: <04d901ccca43$126af200$3740d600$@fisglobal.com> In-Reply-To: <4F0343CE.2080500@infracaninophile.co.uk> References: <04a201ccca33$fe6115a0$fb2340e0$@fisglobal.com> <2092634439.782373.1325609539518.JavaMail.root@erie.cs.uoguelph.ca> <CAGH67wS7QuqXXAa22yP%2BawDR52yLPBzfvRC3_=_mGR3DtGA2eQ@mail.gmail.com> <4F0343CE.2080500@infracaninophile.co.uk>
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> -----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 completely > 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-separated hex > strings in the usual IPv6 idiom.) Out of curiousity, when did the spec change from single-octets to double-octets? I remember early-on seeing IPv6 addresses represented in a form that resembled MAC address specifications. -- Devin _____________ The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.
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