Reclassification of NON-PORTABLE address space?

["Roldan, Brad" <broldan () Covad COM>]

   Anyone know if there is a precedent for reclassifying blocks of
non-portable address space to portable? I didn't see anything in ARIN
archives (maybe I didn't look hard enough). Bribery? Threats?
Acquisition of the assignor by the assignee?

   If such a reclassification were simple, I expect that the process
would be heavily abused by smaller networks that would like to avoid
renumbering.

Brad
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