ARIN co-located nameserver problem

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1

...Presumably in this case, you are responsible for that nameserver
and therefore the /32 should be SWIP'd to you.

I do not see this as a valid assumption. It may well be that you don't
want to be bothered with DNS maintenance or you don't trust your own
network engineers to do DNS right and that you want to pay, say Paul
Vixie, to do your DNS for you. His name and the quality of his DNS
knowledge will add credulity to your network service. This works out
so well, that Paul decides to sell this as a service to many
small/medium size ISP's, running it on a single server. Now one /32 is
the name server for multiple networks. So the registration system must
be able to deal with that. This is not an unreasonable scenario.

Walt Prue

2

In this case Paul would not SWIP the /32 at all since he maintains the
responsibility for the server. Presumably then he would handle the
registration of the nameserver address with ARIN and the original problem
would not occur since the registration application is coming from the
entity with administrative control over the IP address in question.