multiple prefixes

[Tore Anderson]

* Doug Barton

> NPTv6 for free,

Free, really?

Which vendor gives away free NPTv6 translators?

Who pays for the additional line cards and optics necessary to connect
them to the rest of my network?

Who pays for the man-hours required to rack them, configure them, set up
monitoring of them, and document them?

Who pays for the man-hours required to develop workarounds or
alternative solutions for all the «applications that are adversely
affected by NPTv6 Translation» (in the words of RFC 6296)?

Who pays for the electricity the translators use?

> or hassle + $cost for IPv6 PI (if it's even available)

The hassle of obtaining IPv6 PI in the RIPE region is to once fill out a
ripe-467 request form, possibly in collaboration with your provider
(a.k.a. sponsoring LIR), and waiting a day or two for the NCC to make
the assignment.

The NCC's cost is €50/year. Even if your sponsoring LIR decides to add a
whopping 100% profit margin, my guess is that the NPTv6 translators are
going to cost you more than that in electricity alone.

PI suffers from none of the application issues NPTv6 have (this also
applies for PA). You won't have to renumber if you change providers, and
you have a clean upgrade path to multihoming and/or participation in the
DFZ if you so choose.

-- 
Tore Anderson