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There has been some confusion on whether this is "PI". It is not, it's "anycast space", and should be tagged as such in the database, to help people recognizing these special blocks immediately as such. The usual rules apply: "if the criteria for allocations do no longer apply, the address block should be returned" (even if that is unlikely to happen very often in practice).

Don;t know if there is a real need to tag things like this in the DB, but I am not going to argue either way.

If there is a "real" difference as compared to PI (which I'm still not convinced :-), _and_ a "special" provision for reclaiming those addresses, then I think the answer should be YES. Wilfried.