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
