[ANN] host-setup 4.0 released

[Devin Teske]

> -----Original Message-----
> From: owner-freebsd-hackers at freebsd.org [mailto:owner-freebsd-
> hackers at freebsd.org] On Behalf Of Matthew Seaman
> Sent: Tuesday, January 03, 2012 10:07 AM
> To: freebsd-hackers at 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

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