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

Fernando Gont fernando at
Wed Jan 26 00:30:38 CST 2011

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?

Fernando Gont
e-mail: fernando at || fgont at
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1

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