What is non-routable PI? What can you do with it that you cannot do with a ULA prefix?
Not routed for things like VPN-Connections and the likes ... users sometimes need unique IP addresses, as the chance of running into a customer/partner that happens to use the same RFC networks is growing ... IPv6 will make the chances smaller, but getting a PI assigned for such purposes would eliminate that problem.
If you look at current RIPE policies, they imply that all PI address blocks may not be routable on the Internet. LIRs are supposed to warn applicants about this when they issue the PI block. Of course, in most cases, the PI blocks are routable because in most cases, if you announce the block, providers will accept the announcement. The need for such extranet addresses is a good reason for RIPE to allow PI allocations/assignments of IPv6 addresses but 2008-01 is the wrong way to go about it. Here is my wish list for IPv6 PI: - No PI assignments via LIRs. LIRs only manage PA IPv6. - special membership in RIPE with an annual fee for PI holders - contract signed between RIPE and PI holders that covers fee payments, and revocation/return of address blocks - special known superblock from which all PI allocations are made so that people can manage their filters - /48 minimum PI allocation but larger aggregate is also possible - contact every IPv4 PI holder by email and inform them of the new rules for IPv6 PI allocations In my opinion that should be followed by another policy change which requires RIPE membership, annual fee payment and a signed contract for any future ASN assignments or IPv4 PI address blocks. --Michael Dillon