Shim6, was: Re: filtering /48 is going to be necessary

Eugen Leitl eugen at
Thu Mar 15 05:54:15 CDT 2012

On Thu, Mar 15, 2012 at 01:18:04PM +0900, Masataka Ohta wrote:

> As long as we keep using IPv4, we are mostly stopping at /24 and
> must stop at /32.
> But, see the subject. It's well above moore.
> For high speed (fixed time) routed look up with 1M entries, SRAM is
> cheap at /24 and is fine at /32 but expensive and power consuming
> TCAM is required at /48.
> That's one reason why we should stay away from IPv6.

What prevents you from using
with IPv6?

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