From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yuji Sekiya <sekiya@sfc.wide.ad.jp>
Subject: Re: [PATCH] IPv6: Fix Prefix Length of Link-local Addresses
Date: Thu, 10 Oct 2002 09:00:34 +0900
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To: "David S. Miller" <davem@redhat.com>
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At Wed, 09 Oct 2002 16:45:04 -0700 (PDT),
** David S. Miller <davem@redhat.com> wrote:

>    The reason we change the prefix length  from /10 to /64 is
>    following spec and adapting other imprementations.
> 
> I think Derek's explanation shows that the specification
> allows the /10 behavior.

Hmm... we interpret the spec as /64 prefix.

> Also, I suspect that since Derek works for Cisco, some "other
> implementations" behave how he describes. :-)

I have cisco box which installed IPv6 IOS.
But it defines no prefix length at an interface,

FastEthernet4/1 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::201:64FF:FEA3:ED55

and outgoing interface of routing table is NULL ? :-)

L   FE80::/10 [0/0]
     via ::, Null0, 7w0d

-- Yuji Sekiya