Re: Using IPv6 with prefixes shorter than a /64 on a LAN

[Owen DeLong <owen () delong com>]

On Jan 25, 2011, at 10:30 PM, Fernando Gont wrote:

> On 24/01/2011 05:53 p.m., Ray Soucy wrote:
> > Every time I see this question it' usually related to a fundamental
> > misunderstanding of IPv6 and the attempt to apply v4 logic to v6.
> >
> > That said.  Any size prefix will likely work and is even permitted by
> > the RFC.  You do run the risk of encountering applications that assume
> > a 64-bit prefix length, though.  And you're often crippling the
> > advantages of IPv6.
>
> Just curious: What are the advantages you're referring to?
1.      Sparse addressing
2.      SLAAC
3.      RFC 4193 Privacy Addressing
4.      Never have to worry about "growing" a subnet to hold new machines.
5.      Universal subnet size, no surprises, no operator confusion, no bitmath.

There are probably others.

Owen