Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt

[DaeYoung KIM <[e-mail]>]

Sent from my iPhone

> Ah, I see. If you're asking whether you can use this technique to hand out a /96 per host, then the answer is no. You can't use this technique because this technique presumes the use of SLAAC, and SLAAC only works with 64-bit prefixes (except for addresses in ::/3, which aren't routable on the Internet).
> 
> If you're suggesting that SLAAC be changed to support non-64 bit prefixes, that topic is out of scope for this document and this working group

As I know, SLAAC by itself doesn't impose restrictions on the IID length. It's Addr Arch (4291bis) that imposes it.

Then, are all deployed SLLAC software hard-coded to 64 bits? If properly implemented, the IID length should remain a parameter that can be set by an admin.

Should the latter be the case, my life would get easiest.

> If you're willing to use something other than SLAAC, such as DHCPv6, then all you need is one /64 for your whole network and you can number as many devices as you want.

If not for SLAAC, this would certainly be my last option.