using "reserved" IPv6 space

Oliver olipro at
Sat Jul 14 19:49:48 UTC 2012

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 


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