[arin-ppml] ARIN-prop-156 Update 8.3 to allow inter-RIR transfers

Paul Wilson pwilson at apnic.net
Wed Aug 24 19:43:32 EDT 2011

On 25/08/2011, at 3:11 AM, McTim wrote:

> Perhaps I've missed something?
> In terms of "thinking outside of the box" I'd be happy NOT to even entertain the notion of inter-regional transfers.  If we want the v6 transition to accelerate, there has got to be demand for v6.  If v4 is available, then that dampens the need for v6, no?


I would point out two factors here that I believe are uncontroversial:

1. A smooth global IPv6 transition will rely on a critical mass of movement across the Internet;
2. No individual party is strongly motivated to move until they experience a shortage of IPv4 addresses.

At present APNIC can only allocate very small blocks of IPv4, under our "last /8" policy; while other regions have a remaining supply for normal allocations.  RIPE NCC may be in the same position later this year, but ARIN and others have supplies which may last for several years on current projections*.  As a result, the motivation for IPv6 is not evenly distributed, and the environment required for a smooth global IPv6 transition does not (yet) exist.

The availability of inter-regional IPv4 transfers will allow ongoing growth of IPv4 networks in the short term, but (more importantly in my opinion) it will serve to redistribute the motivation for IPv6 more evenly, with positive effect for the eventual IPv6 transition.  Without this, operators in the AP region will have no option but to build networks (some very large) using private IPv4 address space, CGNs and ALGs, and inefficient or partial global IPv6 connectivity.  This outcome I think is not in the best interest of anyone, or of the Internet as a whole.

Paul Wilson

* See http://www.potaroo.net/tools/ipv4/ (second chart)

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