All Subnets must be /64, all hosts must use EUI-64? (According to RFC3513)

Mikael Abrahamsson swmike at swm.pp.se
Tue Jun 2 21:18:57 CEST 2009


On Tue, 2 Jun 2009, Erik Kline wrote:

> Also: 3513 was obsoleted by http://tools.ietf.org/html/rfc4291 (one 
> reason I prefer the tools.ietf.org links).

>From 2.5.4 in RFC4291:

"All Global Unicast addresses other than those that start with binary
    000 have a 64-bit interface ID field (i.e., n + m = 64), formatted as
    described in Section 2.5.1.  Global Unicast addresses that start with
    binary 000 have no such constraint on the size or structure of the
    interface ID field."

This still seems to imply that you really have to have a 64bit interface 
ID field in there, formatted per 2.5.1. So how does /126 fit into that?

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se


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