Re: v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space

[Owen DeLong <owen () delong com>]

On Feb 5, 2009, at 11:06 AM, Joe Abley wrote:

> On 5-Feb-2009, at 06:34, Christopher Morrow wrote:
>
> > to be fair, there are 3 options for multihoming today in v6 (three
> > sanctioned by the IETF, not ordered in any order, not including
> > discussion about goodness/badness/oh-god-no-ness of these)
> > 1) multiple addresses on each device, one per provider
> > 2) shim-6
> > 3) HIP (still in development, as I recall)
>
> 4) Obtain PA space and do what you're doing with v4.
>
> 5) Obtain PI space and do what you're doing with v4.
>
> (4) is problematic because filtering long prefixes in v6 seems to be  
> more energetic than it is in v4. (5) is problematic if you don't  
> qualify for PI space.
Note, however, that the bar for (5) is VERY low if you are
multi-homed.  I would not be opposed to lowering it even
further, but, there does not at this time seem to be community
consensus to do so.

Owen