[154857] in North American Network Operators' Group
Re: using "reserved" IPv6 space
daemon@ATHENA.MIT.EDU (Oliver)
Sat Jul 14 15:51:03 2012
From: Oliver <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
To: nanog@nanog.org
Date: Sat, 14 Jul 2012 21:49:48 +0200
In-Reply-To: <5FD8053D-597D-4495-9BF7-A7FC64D4CB58@delong.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Saturday 14 July 2012 09:18:48 Owen DeLong wrote:
> Given that zone_IDs in my environments consist of terms like:
>
> fxp0
> en0
> eth0
> ge-0/0/0.0
> etc.
>
> How, exactly, would you turn those into part of an IPv6 address?
UTF-8? ASCII? if you go with a custom encoding and do 0-9,a-z, plus a few
symbols you can get 6 bits per char for a grand total of 10 chars squeezed
into 8 octets.
>
> > Any other address class will work well, but I'd rather not use reserved
> > space outside of GUA, ULA our LLA scopes to avoid bug-hunting on poorly
> > implemented IPv6 stacks.
>
> +1
>
> However, I still think GUA is the best, most flexible choice.
This brings up the question of "what is outside of LLA scope" - to my mind
it's everything outside of fe80::/10 - in reality, there's that unfortunate
tendency for it to be considered fe80::/64 when it comes down to
implementation.
Regards,
Oliver
