Home page logo
/

nanog logo nanog mailing list archives

Re: subnet prefix length > 64 breaks IPv6?
From: Joel Maslak <jmaslak () antelope net>
Date: Tue, 27 Dec 2011 16:38:50 -0700

On Dec 27, 2011, at 4:28 PM, Glen Kent <glen.kent () gmail com> wrote:

I had assumed that nodes derive their link local address from the
Route Advertisements. They derive their least significant 64 bytes
from their MACs and the most significant 64 from the prefix announced
in the RAs.

No, link local addresses are not derived from RAs.  Even a system not connected to a router will have a link local 
address on each ethernet (I couldn't tell you how link local works on PPP, ATM, etc, without looking it up - but it 
doesn't require /64 networks).

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]