[ppml] Directory Services - Take 2

[Randy Bush]

> As often comes up in policy review, sometimes specific implementation
> details, in this case media type, shouldn't be written into a policy.
> I agree that the media types should be limited but I would trust the ARIN
> staff to determine which ones they can easily support and make that list
> available publicly.  The list is bound to change over time and it
> shouldn't require a policy change when some fabulous new format becomes
> available...   :-)

bingo!